Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
hien nhanh » hien hanh, thien thanh, tien thanh
cua phuong » cuu phuong, cuc phuong, luan phuong
hien xanh » hien hanh, chieu xanh, hien khanh
hanh tang » hanh trang, hanh mang, hanh tung
anh tang » anh bang, anh dang, anh nang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - ((hanh tang) OR (anh tang)) cua phuong cong tan toan cao~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - ((hanh tang) OR (anh tang)) cua phuong cong tan toan cao*.