Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tu cham dong snippets" » "tu pham dong snippets", "tu ha dong snippets", "tu lam dong snippets", "toc cham dong snippets", "thi cham dong 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: (((("tu cham dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu cham dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tu cham dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu cham dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.