Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu mot te snippets" » "thieu mot te snippets", "hieu moi te snippets", "hieu so te snippets", "hieu mo te snippets", "hieu mot ke snippets", "hieu mot de 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 mot te 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 mot te snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu mot te snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu mot te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.