Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hanh trang » thanh trung, canh tranh, hanh trinh
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
trang va » tran van, hang va
va thong » va thuong, va phuong, he thong
cong dan » cong san, cong tan, huong dan
hang dau » hang va, hang tai
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 ((thien thanh) or (hieu manh)) - hanh trang va thong cong dan ((hang dau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (hieu manh)) - hanh trang va thong cong dan ((hang dau) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (hieu manh)) - hanh trang va thong cong dan ((hang dau) or (than cap))*.