Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"con hoi hieu snippets" » "con hoi phieu snippets", "con hoi tieu snippets", "con moi hieu snippets", "co hoi hieu snippets", "con coi hieu snippets", "cong nhoi hieu snippets", "con hoi hieu slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("con hoi hieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con hoi hieu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con hoi hieu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con hoi hieu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.