Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan hanh da snippets" » "quan thanh da snippets", "quang thanh da snippets", "quang khanh da snippets", "quan hanh dao snippets", "quan hanh dua snippets", "quan hanh va 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: (((("quan hanh da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan hanh da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan hanh da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan hanh da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.