Perhaps you should try some spelling variations:
tieng manh » tieng anh, tien manh, tieng han
hanh trinh » canh tranh, hanh chinh
hoc tieng » hoc hien
trinh va » trinh van, trinh vat, trinh ve
cong ban » cong bang, cong tan, cong dan
cong san » cong tac
than cap » khan cap, thanh lap, thanh 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 trinh va thuong ((cong ban) or (cong san)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieng manh - hanh trinh va thuong ((cong ban) OR (cong san)) than cap.
• Adding a wildcard symbol may retrieve word variants: hoc tieng manh - hanh trinh va thuong ((cong ban) or (cong san)) than cap*.