Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"anh doc voi snippets" » "anh duc voi snippets", "anh hoc voi snippets", "nang doc voi snippets", "anh doi voi snippets", "anh doc vi snippets", "anh do voi 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: (((("anh doc 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: (((("anh doc voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh doc voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh doc voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.