Perhaps you should try some spelling variations:
thong phong » thong phuong, thong thong, hong phong
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
phong van » phung van, thong van, phong va
trung le » trong le, tung le, trung luc
le thong » le thuong, he thong, le hong
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: hoc ((dieu hanh) or (chieu sach)) - thanh trung le thong phong van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu hanh) OR (chieu sach)) - thanh trung le thong phong van toan tap*.