Perhaps you should try some spelling variations:
thanh tung » thanh cong
tung viet » trung viet, tuong viet, dung viet
viet dung » viet hung, viet huong, viet trung
trong ban » trong san, trong tan, trong quan
cua tinh » va tinh, ha tinh, hoa tinh
cua sinh » hoa sinh, va sinh
ban than » ban thanh, van thanh, ban hang
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((cua tinh) or (cua sinh)) - thanh tung viet dung trong ban than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((cua tinh) OR (cua sinh)) - thanh tung viet dung trong ban than cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((cua tinh) or (cua sinh)) - thanh tung viet dung trong ban than cao*.