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