Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu duc cham snippets" » "huu duc pham snippets", "huu duc kham snippets", "huu duc tham snippets", "cuu duoc cham snippets", "huu dung 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: (((("huu duc 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: (((("huu duc cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu duc cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu duc cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.