Perhaps you should try some spelling variations:
thien thanh » thi thanh, hien hanh, chien tranh
tien thanh » tien thinh, tran thanh, den thanh
hanh tang » hanh trang, anh tang, hanh mang
ca thuong » cao thuong, cua thuong, va thuong
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap
tang ca » tang cua, hang ca, tang ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) OR (tien thanh)) - hanh tang ca thuong ((cong dan) or (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (tien thanh)) - hanh tang ca thuong ((cong dan) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) OR (tien thanh)) - hanh tang ca thuong ((cong dan) or (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) OR (tien thanh)) - hanh tang ca thuong ((cong dan) or (cong tan)) toan cau*.