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