Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam dao cham snippets" » "nam cao chat snippets", "nam dao phat snippets", "nam tao chat snippets", "nam dan cham snippets", "nam sao cham snippets", "nam cao cham 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: (((("nam dao cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam dao cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam dao cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam dao cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.