Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach dan du snippets" » "bach dang du snippets", "bac dan du snippets", "bach van du snippets", "bach dan dau snippets", "bach danh du snippets", "bach dan su 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: (((("bach dan 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: (((("bach dan du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach dan du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach dan du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.