Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhat bieu » nhan dieu, nha dieu, nha hieu
bieu sang » chieu sang, bien dang, lieu nang
trang cua » tranh cua, tang cua, trung cua
dong cong » duong cong, dung cong, cong cong
dang cong » dung cong
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: nhat bieu sang - hanh trang cua ((dong cong) or (dang cong)) tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nhat bieu sang - hanh trang cua ((dong cong) OR (dang cong)) tac toan cau.
• Adding a wildcard symbol may retrieve word variants: nhat bieu sang - hanh trang cua ((dong cong) or (dang cong)) tac toan cau*.