Spotlight search didn't work for me at all, that's the iPhone search engine that searches the phone for all different stuff, you get it by swiping down on the display, you put in a keyword of what you're looking for. But that did not bring up the missing texts that i was looking for. These were not texts i deleted. I believe they were deleted by the person i was texting with, and going back in time until December or before. Maybe that's why they didn't show up in Spotlight search. The main ones i wanted to recover were from just a few days ago, after my last iTunes back up, so i used a program which i thought i found on this page but now i don't see it, it's called Phone Recover. I thought i got it from a link on this page but right now i don't see it so i don't know where i got it, i'll include the link---you download the program, you install it, you start it and then hook the phone up to your computer USB port, and you follow some onscreen directions, it's straight forward, you select the device you want to recover from, in this case a phone, and then you check the kind of data you want to recover, so it would be texts or something like that, SMS, and attachments if desired, and then you click Recover. In my case it was a pretty long time, maybe 10 or 20 minutes, until everything was downloaded. When it finished i saw that it also downloaded my safari bookmarks, not sure why because when it comes up, all the data type boxes are checked and i went through and unchecked everything except texts and attachments. Maybe it wouldn't have taken so long if Safari bookmarks weren't being downloaded, there's about a million of those. Anyway, when they're downloaded you can look through all the texts and find the ones you're looking for. Because i had a lot, that wasn't so easy, they weren't chronological, the order seemed random, and not all of them had recognizable names. The ones i was looking for were labeled with a couple of letters and a long number, i just had to carefully look through and find it by the first words of the text, it wasn't easy. Some texts are in red with a line through them. I am guessing now that those are the ones that were deleted, so next time i use it, if i do, i will know to only look at the red ones. I had wanted something that would restore the texts to my phone, not just to the computer, but that's all i have for now. I think this is one of many similar programs that you could use to recover deleted texts from the phone and just read them on your computer. i didn't download the texts to my computer, i just looked at them in the program because when i clicked on the option to download them, i got a message that said $49.95, and i might not mind paying for it but i had some questions i wanted to ask first so i emailed the customer support email and have not yet heard back from them. But what i did learn was that this is very doable, and you can do it, you just find one of these programs and follow the instructions and you will be able to read the texts on your computer. Here's the link for the one i used
http://www.imobie.com/phonerescue/