Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu hoi hoc snippets" » "hieu hoa hoc snippets", "hieu moi hoc snippets", "hieu hoc hoc snippets", "hieu khoa hoc snippets", "hieu hoi chuc 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 hoi hoc 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 hoi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu hoi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu hoi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.