Perhaps you should try some spelling variations:
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, hieu lang
trang tuan » tran tuan, trung tuan, tran xuan
trong tuan » trong quan, trung tuan, trong tan
nhung cong » dung cong, thong cong, hang cong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chiet tach) or (chieu sang)) - hanh ((trang tuan) OR (trong tuan)) nhung cong tac toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chiet tach) OR (chieu sang)) - hanh ((trang tuan) OR (trong tuan)) nhung cong tac toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chiet tach) or (chieu sang)) - hanh ((trang tuan) OR (trong tuan)) nhung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chiet tach) or (chieu sang)) - hanh ((trang tuan) OR (trong tuan)) nhung cong tac toan cao*.