Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hieu cac » hieu va, hieu van, vien cac
hieu luc » hieu luat, hieu qua
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((((hieu cac) or (hieu luc))) or (chieu sach)) - hanh tranh cua nhung cong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((((hieu cac) OR (hieu luc))) OR (chieu sach)) - hanh tranh cua nhung cong van toan tap.
• Adding a wildcard symbol may retrieve word variants: toc ((((hieu cac) or (hieu luc))) or (chieu sach)) - hanh tranh cua nhung cong van toan tap*.