Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"viet qua cau snippets" » "viet qua code snippets", "vien quan cau snippets", "ket qua cau snippets", "viet ha cau snippets", "viet quan cau snippets", "viet qua cac snippets", "viet qua ca 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: (((("viet qua cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet qua cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( viet qua cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet qua cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.