Perhaps you should try some spelling variations:
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, hang cong
hien tinh » khien tinh, thien tinh, bien tinh
trung cua » trung tuan, trung cap, dung cua
cong tac » cong ty
khan cap » khan ap, khoan cam, phan cac
than cap » thanh lap, thanh cac, than cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - hanh ((trung cua) or (truong cua)) nhung cong tac ((khan cap) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh ((trung cua) OR (truong cua)) nhung cong tac ((khan cap) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh ((trung cua) or (truong cua)) nhung cong tac ((khan cap) or (than cap))*.