Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chao cuu voi snippets" » "cham cuu voi snippets", "chao chu voi snippets", "khao cuu voi snippets", "chao cuu hoi snippets", "chao cuu noi snippets", "chao cuu vai 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: (((("chao cuu 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: (((("chao cuu voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chao cuu voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chao cuu voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.