Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoc thuat » hoc thuyet, hoc thuc, hoc chat
trung vat » trung va, trung van, trong vat
dung cong » dung trong
ho thuat » ho thuan, khoi thuat, thu thuat
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong tan, huong dan
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac

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: ((ho thuat) OR (hoc thuat)) tinh - thanh trung vat dung cong dan ((than cao) OR (than cap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho thuat) OR (hoc thuat)) tinh - thanh trung vat dung cong dan ((than cao) or (than cap))~".
• Adding a wildcard symbol may retrieve word variants: ((ho thuat) OR (hoc thuat)) tinh - thanh trung vat dung cong dan ((than cao) or (than cap))*.