Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan anh hon snippets" » "luan danh hon snippets", "tuan anh hon snippets", "lan anh hon snippets", "luan manh hon snippets", "luan anh son snippets", "luan anh hoc 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: (((("luan anh hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan anh hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan anh hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan anh hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.