Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
trinh luan » trinh luat, trinh quan, trinh han
hien xanh » hien hanh, hien nhanh, chieu xanh
luan dinh » xuan dinh, luan kinh, luan danh
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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 - canh trinh luan dinh ((cong dan) or (cong san)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - canh trinh luan dinh ((cong dan) OR (cong san)) toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh trinh luan dinh ((cong dan) or (cong san)) toan tap*.