Perhaps you should try some spelling variations:
"anh thuc cham snippets" » "anh thuc code snippets", "anh thuc pham snippets", "anh phuc cham snippets", "anh thuc chan snippets", "am thuc cham snippets", "dan thuc cham snippets", "anh tu 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: (((("anh thuc cham snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh thuc cham snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( anh thuc cham snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh thuc cham snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.