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