Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu dan mon snippets" » "hieu van mon snippets", "sieu dan mon snippets", "hieu dac mon snippets", "hieu dap mon snippets", "hieu dan dong snippets", "hieu dong mon 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 dan mon 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 dan mon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu dan mon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu dan mon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.