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