Perhaps you should try some spelling variations:
trung luan » truong luan, trung quan, truong luat
trung tuan » trung thanh, trung tam, tran tuan
hoc thien » hoc hien, hoc thieu, hoc thiet
ung cong » dung cong, luong cong, duong cong
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cau » phan dau, phan cac, phan tu

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) or (toc thieu)) thanh - thanh ((trung luan) OR (trung tuan)) ung cong tac phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thien) OR (toc thieu)) thanh - thanh ((trung luan) OR (trung tuan)) ung cong tac phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thien) or (toc thieu)) thanh - thanh ((trung luan) OR (trung tuan)) ung cong tac phan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) or (toc thieu)) thanh - thanh ((trung luan) OR (trung tuan)) ung cong tac phan cau*.