Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu huu chan snippets" » "khu huu han snippets", "khu huu chau snippets", "khu huu phan snippets", "khuat huu chan snippets", "khu phuc chan 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: (((("khu huu chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khu huu chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu huu chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu huu chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.