Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tran » thanh trang, thanh toan, thanh tra
tuan thong » toan thong, tran thong, tuan phong
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tran tuan » tran xuan, tran quang, tran thanh
trinh han » trinh quan
han tap » han tai, toan tap, nhan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (hieu manh)) - thanh tran tuan thong cong trinh han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (hieu manh)) - thanh tran tuan thong cong trinh han tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hieu manh)) - thanh tran tuan thong cong trinh han tap*.