Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi can voi snippets" » "khoa can voi snippets", "khoi nang voi snippets", "hoc can voi snippets", "khoi ban voi snippets", "khoi can moi snippets", "khoi cap 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: (((("khoi can 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: (((("khoi can voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi can voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi can voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.