Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van tay hoi snippets" » "van tai hoi snippets", "van tan hoi snippets", "van tam hoi snippets", "van tay ho snippets", "van tao hoi snippets", "van tay thai 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 tay 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 tay hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van tay hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tay hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.