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