Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong tao soi snippets" » "cong tac soi snippets", "cong tan soi snippets", "cong bao soi snippets", "cong tao boi snippets", "cong tao hoi 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 soi 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 soi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong tao soi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong tao soi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.