Perhaps you should try some spelling variations:
"cuoc chinh do snippets" » "hoc chinh do snippets", "quoc thinh do snippets", "cuoc chien do snippets", "cuoc chinh so snippets", "cuoc chinh du snippets", "cuoc chinh cho snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cuoc chinh do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuoc chinh do snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuoc chinh do snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuoc chinh do snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.