Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhat ha chi snippets" » "nhat hoa chi snippets", "nha ha chi snippets", "khat ha chi snippets", "nhat hai chi snippets", "nhat ho chi snippets", "nhat ha thi 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: (((("nhat ha chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhat ha chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhat ha chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhat ha chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.