Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung cua » truong cua, trung tuan, trung cap
cong cong » cong dong, trong cong, dung cong
hoc hieu » hoc thieu, doc hieu, hoc dieu
cong ban » cong bang, cong san, cong tan
than cap » khan cap, thanh lap, thanh cac
toan ban » van ban

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc hien)) manh - thanh trung cua cong cong ban ((than cap) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc hien)) manh - thanh trung cua cong cong ban ((than cap) OR (toan ban))*.