Perhaps you should try some spelling variations:
trong tuan » trong quan, trung tuan, trong tan
kieu tinh » trieu tinh, diep tinh, bien tinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trang qua » trong qua, trong quan, trang tuan
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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 ((kieu tinh) OR (lieu tinh)) - hanh ((trang qua) OR (trong tuan)) trong cong tac toan cau~.
• Adding a wildcard symbol may retrieve word variants: ho ((kieu tinh) or (lieu tinh)) - hanh ((trang qua) or (trong tuan)) trong cong tac toan cau*.