Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao khau co snippets" » "dao phat co snippets", "dao huu co snippets", "cau khau co snippets", "dao khau cao snippets", "dao khau o snippets", "dao khac co 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 co 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 co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao khau co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao khau co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.