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