Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"va gianh soc snippets" » "va gian soc snippets", "va giang son snippets", "va gian doc snippets", "van giang soc snippets", "va giai soc 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: (((("va gianh soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va gianh soc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va gianh soc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va gianh soc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.