Perhaps you should try some spelling variations:
tieng manh » tieng anh, tien manh, tieng han
hanh trang » thanh trung, canh tranh, hanh trinh
hoc tieng » hoc hien
trang va » tran van, hang va
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tieng manh - hanh trang va thuong ((cong ban) or (cong san)) ((than cap) OR (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieng manh - hanh trang va thuong ((cong ban) OR (cong san)) ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tieng manh - hanh trang va thuong ((cong ban) or (cong san)) ((than cap) OR (khan cap))".
• Adding a wildcard symbol may retrieve word variants: hoc tieng manh - hanh trang va thuong ((cong ban) or (cong san)) ((than cap) OR (khan cap))*.