Perhaps you should try some spelling variations:
thanh trung » thanh tung
thong cong » trong cong, tong cong, thong thong
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong tac » cong ty
tac khan » tac nhan, cac khoan, tac chuan
khan cap » khan ap, than cap, khoan cam
ho cuu » ho chu, ho cua, so cuu
o cuu » so cuu, _ cuu, o cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((o cuu) OR (ho cuu))) OR (_ nuu)) tinh - thanh trung cua thong cong tac khan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((o cuu) OR (ho cuu))) or (_ nuu)) tinh - thanh trung cua thong cong tac khan cap~".
• Adding a wildcard symbol may retrieve word variants: ((((o cuu) OR (ho cuu))) or (_ nuu)) tinh - thanh trung cua thong cong tac khan cap*.