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