Perhaps you should try some spelling variations:
trien quang » tran quang, tuyen quang, dien quang
thanh trung » thanh tung
trung tran » trung tuan, trung thanh, trung tam
tran trong » gian trong, quan trong, tran hong
thien van » thi van
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien van) or (trien quang)) - thanh trung tran trong cong tan ((than cap) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien van) OR (trien quang)) - thanh trung tran trong cong tan ((than cap) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thien van) or (trien quang)) - thanh trung tran trong cong tan ((than cap) or (phan cac))*.