Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham voi con snippets" » "cham hoi con snippets", "pham voi con snippets", "cham soc con snippets", "cham voi cong snippets", "cham voi chon snippets", "cham voi can 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 voi con 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 voi con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham voi con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham voi con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.