Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu ho chu snippets" » "hieu hoa chu snippets", "hieu hoc chu snippets", "hieu so chu snippets", "hieu hoi chu snippets", "hieu cho chu snippets", "hieu ho chua 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 ho chu 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 ho chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu ho chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu ho chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.