Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hai chi snippets" » "cuc hai chi snippets", "duc dai chi snippets", "duc hau chi snippets", "duc thai chi snippets", "duc tai chi snippets", "duc hai thi 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: (((("duc hai chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hai chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hai chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hai chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.