Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hien xanh » hien hanh, hien nhanh, chieu xanh
trong tap » trong thap, tong tap, trong tan
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
tap quan » tac quan, hai quan
quan ha » quan he

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 - hanh tranh ((cua dung) OR (cua dong)) trong tap quan ha~".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tranh ((cua dung) OR (cua dong)) trong tap quan ha*.