Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong tan le snippets" » "cong tan code snippets", "cong tac le snippets", "cong san le snippets", "cong thanh le snippets", "cong tang le snippets", "cong tuan le snippets", "cong tan lee 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 le 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 le snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong tan le snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tan le snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.