Perhaps you should try some spelling variations:
thanh tung » thanh cong
khong cong » thong cong, khong cang, chong cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua khong » hua khong, cua phuong, cua thuong
hoc hieu » hoc thieu, hoc hien, doc hieu
cong van » cong vang, cong san, song van
tuan cap » thuan cam, toan cao, toan cau
than cap » khan cap, thanh lap, thanh cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((thanh trung) OR (thanh tung)) cua khong cong van ((tuan cap) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - ((thanh trung) or (thanh tung)) cua khong cong van ((tuan cap) OR (than cap))~".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((thanh trung) or (thanh tung)) cua khong cong van ((tuan cap) OR (than cap))*.