Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan khu cau snippets" » "quan he cau snippets", "quan ha cau snippets", "quan su cau snippets", "quan nhu cau snippets", "quan chua cau 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 khu cau 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 khu cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan khu cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan khu cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.