Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu tai le snippets" » "ngu thai le snippets", "ngu tap le snippets", "ngu ta le snippets", "ngu tri le snippets", "ngu thi le snippets", "ngu tai he 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: (((("ngu tai le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu tai le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu tai le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu tai le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.