Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc huu chan snippets" » "luc huu han snippets", "luc huu chau snippets", "luc huu phan snippets", "duoc huu chan snippets", "luc chua chan snippets", "nuoc huu 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: (((("luc 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: (((("luc huu chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc huu chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc huu chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.