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