Perhaps you should try some spelling variations:
thanh tung » thanh cong
hien hanh » dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
qua trong » quan trong, qua trinh, qua song
tung qua » dung qua, tuong quan, trung quan
cong ban » cong bang, cong san, cong tan
than cau » phan cau, than cap, thanh chau
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) or (hieu manh)) - thanh tung qua trong cong ban ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (hieu manh)) - thanh tung qua trong cong ban ((than cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (hieu manh)) - thanh tung qua trong cong ban ((than cau) or (toan cau))*.