Perhaps you should try some spelling variations:
truong quan » trong quan, thong quan, luong quan
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
truong cua » truong ca, truong cao, huong cua
nhung cong » dung cong, thong cong, hang cong
cong tan » cong tac, cong san, cong thanh
tran tap » toan tap, tran tan, tran tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu xanh) or (chieu sach)) - hanh ((truong cua) OR (truong quan)) nhung cong tan tran tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh ((truong cua) OR (truong quan)) nhung cong tan tran tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chieu sach)) - hanh ((truong cua) OR (truong quan)) nhung cong tan tran tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chieu sach)) - hanh ((truong cua) OR (truong quan)) nhung cong tan tran tap*.