Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
theo chieu » theo tieu, ho chieu, theo chu
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung tuan » trung thanh, tran tuan, truong thanh
tuong dan » huong dan, tung dan, xuong dan
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu tinh - hanh ((trung tuan) OR (trung tam)) nhung tuong dan ((than cau) OR (toan cau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu tinh - hanh ((trung tuan) OR (trung tam)) nhung tuong dan ((than cau) or (toan cau))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu tinh - hanh ((trung tuan) OR (trung tam)) nhung tuong dan ((than cau) or (toan cau))*.