Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cua tu doan snippets" » "cua tu code snippets", "cua du doan snippets", "cua tu dan snippets", "cua tap doan snippets", "cua tuc doan snippets", "cua su doan snippets", "cua cu doan 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: (((("cua tu doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua tu doan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cua tu doan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua tu doan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.