Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu van mo snippets" » "hieu va mo snippets", "thien van mo snippets", "lieu va mo snippets", "hieu van mao snippets", "hieu van do snippets", "hieu van ho 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 van mo 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 van mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu van mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu van mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.