Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham vao de snippets" » "cham va de snippets", "pham van de snippets", "chat va de snippets", "cham nao de snippets", "cham cao de snippets", "cham sao de 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: (((("cham vao de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cham vao de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham vao de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham vao de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.