Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong tao hoa snippets" » "cong tac hoa snippets", "cong tan hoa snippets", "cong bao hoa snippets", "cong tao hoi snippets", "cong tao ho snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 tao hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong tao hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tao hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tao hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.