Perhaps you should try some spelling variations:
cong quang » luong quang, thong quang, duong quang
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tran » hanh trang, thanh tran, hanh tram
tran tuan » tran xuan, tran quang, tran thanh
tuan hang » tuan hoang, tuan bang, tuan dang
tien anh » tieng anh, tien manh, dien anh
cong san » cong tac
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (tien anh)) - hanh tran tuan hang ((cong quang) or (cong san)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (tien anh)) - hanh tran tuan hang ((cong quang) OR (cong san)) than cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (tien anh)) - hanh tran tuan hang ((cong quang) or (cong san)) than cau*.