Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan van cho snippets" » "luan van cho snippets", "quan va cho snippets", "quan luan cho snippets", "quan van chi snippets", "quan san cho snippets", "quan 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: (((("quan 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: (((("quan van cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan van cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.