Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi van cho snippets" » "vi van cho snippets", "voi can cho snippets", "doi van cho snippets", "voi van chi snippets", "voi san cho snippets", "voi van chat 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: (((("voi van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("voi van cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi van cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.