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