Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hac hoi snippets" » "van hoc hoi snippets", "van ha hoi snippets", "van hai hoi snippets", "van hoach hoi snippets", "van phuc hoi 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: (((("van hac hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van hac hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hac hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hac hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.