Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong tan voi snippets" » "cong tan code snippets", "cong tac voi snippets", "cong san voi snippets", "cong thanh voi snippets", "cong than voi snippets", "cong ban voi snippets", "cong tan hoi 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 tan 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 tan voi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong tan voi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tan voi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.