Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
hoa thuat » hoa thuan, khoi thuat, hoa chat
hoc thuat » hoc thuyet, hoc thuc, hoc chat
luan han » luan hoan, luan phan, luan van
han cong » phan cong, hang cong, hanh cong
cong dan » cong san, cong tan, huong dan
thai cao » tai cao, thoai cac, thuat cao
khan cap » khan ap, than cap, khoan cam

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: ((hoa thuat) OR (hoc thuat)) tach - thanh dung luan han cong dan ((thai cao) OR (khan cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoa thuat) OR (hoc thuat)) tach - thanh dung luan han cong dan ((thai cao) or (khan cap))~".
• Adding a wildcard symbol may retrieve word variants: ((hoa thuat) OR (hoc thuat)) tach - thanh dung luan han cong dan ((thai cao) or (khan cap))*.