Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh va » tranh van, trang va, trinh va
cong dan » huong dan, cong dong, cong tac
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
toan tap » toan ban

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 tranh va nhung ((((cong dan) or (cong san))) or (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tranh va nhung ((((cong dan) OR (cong san))) OR (cong tan)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tranh va nhung ((((cong dan) or (cong san))) or (cong tan)) toan tap*.