Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nao mu hoan snippets" » "nao su hoan snippets", "nao vu hoan snippets", "nao thu hoan snippets", "nao me hoan snippets", "nao tu hoan 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: (((("nao mu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao mu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nao mu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao mu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.