Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat vat da snippets" » "thuat vat da snippets", "chat va da snippets", "nhan vat da snippets", "khat vat va snippets", "khat vat de 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: (((("khat vat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khat vat da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat vat da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat vat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.