Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, truong thanh
phuong dan » phuong danh, phuong doan, huong dan
tran tuan » tran xuan, tran quang, tran thanh
dan toan » van toan, dan than, manh toan
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 ((chieu xanh) OR (chieu sach)) - hanh ((trung tuan) or (tran tuan)) nhung phuong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu xanh) OR (chieu sach)) - hanh ((trung tuan) OR (tran tuan)) nhung phuong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sach)) - hanh ((trung tuan) or (tran tuan)) nhung phuong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sach)) - hanh ((trung tuan) or (tran tuan)) nhung phuong dan toan cau*.