Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con thong do snippets" » "cong thong do snippets", "con hong do snippets", "cong thuong do snippets", "con thong o snippets", "con thong co snippets", "con thong mo 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: (((("con thong 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: (((("con thong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con thong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con thong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.