Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian hieu ve snippets" » "gian viet ve snippets", "van hieu ve snippets", "tin hieu ve snippets", "gian hieu va snippets", "gian hieu van 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: (((("gian hieu ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian hieu ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian hieu ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian hieu ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.