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