Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phac dua voi snippets" » "phan dua voi snippets", "khac duan voi snippets", "pham duc voi snippets", "phac da voi snippets", "phac dua moi snippets", "phac sua 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: (((("phac dua 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: (((("phac dua voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phac dua voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phac dua voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.