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