Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hao wang cau snippets" » "hao wang code snippets", "hao tang cau snippets", "chao yang cau snippets", "hao quang cau snippets", "hao hang cau snippets", "hao bang cau snippets", "hao nang cau 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: (((("hao wang 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: (((("hao wang cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hao wang cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao wang cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.