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