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