Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hao hang cau snippets" » "hao hang code snippets", "hao zhang cau snippets", "hao hung cau snippets", "hao tang cau snippets", "hao hang dau snippets", "hao hang ca snippets", "hao nhung 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 hang 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 hang cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hao hang cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao hang cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.