Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu doi cua snippets" » "hieu moi cua snippets", "hieu loi cua snippets", "hieu voi cua snippets", "hieu hoi cua snippets", "hieu dai cua snippets", "hieu dong cua 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 doi cua 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 doi cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu doi cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu doi cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.