Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu thi loc snippets" » "sieu thi loc snippets", "hieu chi loc snippets", "hiep thi loc snippets", "hieu thi goc snippets", "hieu thi lo 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: (((("hieu thi loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu thi loc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu thi loc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu thi loc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.