Perhaps you should try some spelling variations:
thien chien » thien nhien
thien hieu » thien nhien, thien hue, tin hieu
tong cong » trong cong, cong cong, dung cong
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac
va tong » va thong, va tuong, va trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thien hieu) OR (thien chien)) quang - canh tranh va tong cong dan ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thien hieu) OR (thien chien)) quang - canh tranh va tong cong dan ((than cap) OR (khan cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thien hieu) OR (thien chien)) quang - canh tranh va tong cong dan ((than cap) or (khan cap))".
• Adding a wildcard symbol may retrieve word variants: ((thien hieu) OR (thien chien)) quang - canh tranh va tong cong dan ((than cap) or (khan cap))*.