Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu luc ke snippets" » "hieu luat ke snippets", "hieu qua ke snippets", "hieu muc ke snippets", "hieu luc le snippets", "hieu tuc ke 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 luc ke 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 luc ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu luc ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu luc ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.