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