Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, dien thanh
tien thanh » tien thinh, tran thanh, den thanh
phuong dan » phuong danh, phuong doan, huong dan
manh tung » manh hung, thanh tung
tung tuan » trung tuan, hung tuan, quang tuan
tuan doan » quan doan, tuan hoan, tan doan
toan cau » toan ban, toan tap, toan tai
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 nhanh) or (tien thanh)) - manh tung tuan doan phuong dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien nhanh) OR (tien thanh)) - manh tung tuan doan phuong dan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hien nhanh) or (tien thanh)) - manh tung tuan doan phuong dan ((toan cau) or (toan cao))*.