Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao hieu hoi snippets" » "cao hieu hoi snippets", "van hieu hoi snippets", "bao hiem hoi snippets", "dao hieu hoa snippets", "dao hieu moi snippets", "dao hieu hoc 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: (((("dao hieu hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao hieu hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao hieu hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao hieu hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.