Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu tuan doc snippets" » "huu han doc snippets", "huu tung doc snippets", "huu than doc snippets", "huu quan doc snippets", "huu tuan do 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: (((("huu tuan doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huu tuan doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu tuan doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu tuan doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.