Perhaps you should try some spelling variations:
tinh tang » tinh trang, tinh sang, tinh bang
dang cong » dung cong
ho chieu » theo chieu, hoc thieu, mot chieu
tang van » dang van, hoang van, trong van
van dang » van dong, van dung, van nang
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo tieu)) xanh - tinh tang van dang cong ((tan toan) OR (tap toan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo tieu)) xanh - tinh tang van dang cong ((tan toan) OR (tap toan)) cao*.