Perhaps you should try some spelling variations:
thanh tung » thanh cong
chung dong » chuong dong, chuong duong, phuong dong
hoc thieu » toc thieu, hoc hien
cua chung » cua nhung, luan chung, luat chung
hoc hieu » hoc hien, doc hieu, hoc dieu
tung cua » trung cua, tuong cua, dung cua
dong san » cong san, dong bang, dong von
than cao » toan cao, thai cao, than cap
tai cao » thai cao, tao cao, tai sao

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: ((hoc hieu) OR (hoc thieu)) cach - thanh tung cua chung dong san ((than cao) OR (tai cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc thieu)) cach - thanh tung cua chung dong san ((than cao) or (tai cao))~".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc thieu)) cach - thanh tung cua chung dong san ((than cao) or (tai cao))*.