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