Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua khach da snippets" » "cua thanh da snippets", "nha khach da snippets", "cua khach san snippets", "cua khach deu snippets", "cua kham da 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: (((("cua khach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua khach da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua khach da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua khach da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.