Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con quy cham snippets" » "con quy chau snippets", "con quy pham snippets", "con qua cham snippets", "cong quy cham snippets", "cung quy cham 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: (((("con quy cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con quy cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con quy cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con quy cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.