Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao giap voi snippets" » "cao giai voi snippets", "cao cap voi snippets", "cac giai voi snippets", "cao gian voi snippets", "cao gia moi snippets", "cao giap thi 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: (((("cao giap 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: (((("cao giap voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao giap voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao giap voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.