Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu hoi cham snippets" » "thu hoi chuc snippets", "thu hoi chu snippets", "thu toc cham snippets", "thu hoai cham snippets", "thu phoi cham snippets", "thu hai 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: (((("thu hoi 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: (((("thu hoi cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu hoi cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu hoi cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.