Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nao cau cua snippets" » "nao cau code snippets", "nano cau cua snippets", "tao cau cua snippets", "dao cau cua snippets", "nao cau qua snippets", "nao ca cua snippets", "nao cu cua 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: (((("nao cau cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nao cau cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nao cau cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao cau cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.