Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc thanh do snippets" » "duc thanh do snippets", "luu thanh do snippets", "tuc thanh do snippets", "luc thanh pho snippets", "luc thanh hoa snippets", "luc thanh loi 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: (((("luc thanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc thanh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc thanh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc thanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.