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