Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, nhung don
hien hanh » dieu hanh
hang cong » dang cong, hang nong, bang cong
trung va » truong va, trang va, trung ha
than cap » khan cap, thanh lap, thanh cac
toan cau » toan cao, toan ban, toan tap

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