Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian hieu he snippets" » "gian viet he snippets", "van hieu he snippets", "tin hieu he snippets", "gian hieu ve snippets", "gian hiem he snippets", "gian hieu le 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 he 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 he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian hieu he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian hieu he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.