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