Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
phuong cau » huong cau, phuong cham, phuong cach
hieu manh » chieu xanh, hieu nganh, dieu hanh
tuong ban » tuong bang, tuong dan, tuong quan
trong ban » trong san, trong tan, trong quan
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong san, cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - thanh ((tuong ban) OR (trong ban)) hang ((cong tan) or (cong thanh)) phuong cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh ((tuong ban) OR (trong ban)) hang ((cong tan) OR (cong thanh)) phuong cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - thanh ((tuong ban) OR (trong ban)) hang ((cong tan) or (cong thanh)) phuong cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh ((tuong ban) OR (trong ban)) hang ((cong tan) or (cong thanh)) phuong cau*.