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