Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cua thuong » cua truong, cua phuong, cua huong
phuong van » phung van, phong van, phuong lan
hien hanh » dieu hanh
ca thuong » cao thuong, va thuong, cp thuong
van chat » cao chat

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 (hien hanh)) - thanh trung ((cua thuong) OR (ca thuong)) phuong van chat va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (hien hanh)) - thanh trung ((cua thuong) OR (ca thuong)) phuong van chat va.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (hien hanh)) - thanh trung ((cua thuong) OR (ca thuong)) phuong van chat va".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (hien hanh)) - thanh trung ((cua thuong) OR (ca thuong)) phuong van chat va*.