Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
truong cao » truong dai
phuong van » phung van, phong van, phuong lan
hien xanh » hien hanh, hien nhanh, chieu xanh
trung cua » truong cua, trung tuan, trung cap
van toan » van tuan, van tan, van thanh
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 xanh - hanh ((trung cua) or (truong cao)) nhung phuong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((trung cua) OR (truong cao)) nhung phuong van toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh ((trung cua) or (truong cao)) nhung phuong van toan cau*.