Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu mo canh snippets" » "hieu moi canh snippets", "hieu mot canh snippets", "hieu so canh snippets", "hieu bo canh snippets", "hieu do canh snippets", "hieu mo danh 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 mo canh 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 mo canh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu mo canh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu mo canh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.