Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"lan van cao snippets" » "lan van code snippets", "luan van cao snippets", "lang van cao snippets", "tan van cao snippets", "lan van dao snippets", "lan van bao snippets", "lan van 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: (((("lan van 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: (((("lan van cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( lan van cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan van cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.