Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh trang » thanh trung, canh tranh, hanh trinh
cua dang » cua ban
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap
tinh » trinh, dinh, minh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((diep tinh) or (nhieu tang)) - hanh trang ((cua dang) OR (cua cong)) cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((diep tinh) OR (nhieu tang)) - hanh trang ((cua dang) OR (cua cong)) cong tan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((diep tinh) or (nhieu tang)) - hanh trang ((cua dang) OR (cua cong)) cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: toc ((diep tinh) or (nhieu tang)) - hanh trang ((cua dang) OR (cua cong)) cong tan toan cau*.