Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban
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 trinh cua nhung ((cong dan) OR (cong tan)) ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh trinh cua nhung ((cong dan) OR (cong tan)) ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh trinh cua nhung ((cong dan) OR (cong tan)) ((toan cao) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh trinh cua nhung ((cong dan) OR (cong tan)) ((toan cao) or (toan tap))*.