Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hang dot snippets" » "thi hang dot snippets", "thuc hanh dot snippets", "thu huong dot snippets", "thu hang doi snippets", "thu hoang dat snippets", "thu hang dau 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: (((("thu hang dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu hang dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hang dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hang dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.