Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong tan da snippets" » "cong tan code snippets", "cong tac da snippets", "cong san da snippets", "cong thanh da snippets", "cong tan dac snippets", "cong tan dat snippets", "cong tang da 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: (((("cong tan da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong tan da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong tan da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tan da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.