Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, chien tranh
trung phan » trung thanh, trung ha, trung tuan
hien hanh » dieu hanh
dung phan » dung nhan, dung luan, dung ha
hang cong » dang cong, hang nong, bang cong
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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