Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam lap toan snippets" » "nam tap toan snippets", "nam lap doanh snippets", "nam phap toan snippets", "nam ap toan snippets", "nam lai toan snippets", "nam lam toan 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 lap toan 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 lap toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam lap toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam lap toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.