Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong do voi snippets" » "cong do code snippets", "cong dot voi snippets", "cuong do voi snippets", "cong so voi snippets", "cong doi voi snippets", "cong dao voi snippets", "cong do moi snippets"
"python using java snippets" » "python using data 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: (((("cong do voi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong do voi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong do voi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong do voi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.