Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao khau doc snippets" » "dao phat doc snippets", "dao huu doc snippets", "cau khau doc snippets", "dao chau doc snippets", "dao khu do snippets", "dao phau hoc 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: (((("dao khau doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao khau doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao khau doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao khau doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.