Perhaps you should try some spelling variations:
trien quang » tran quang, tuyen quang, dien quang
thanh trung » thanh tung
thien quan » lien quan, thien van, thien quy
trung tuan » trung thanh, trung tam, tran tuan
tuan trong » thuan trong, quan trong, tran trong
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap
phan lap » phan dau

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 quan) or (trien quang)) - thanh trung tuan trong cong tan ((than cau) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien quan) OR (trien quang)) - thanh trung tuan trong cong tan ((than cau) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thien quan) or (trien quang)) - thanh trung tuan trong cong tan ((than cau) or (phan lap))*.