Perhaps you should try some spelling variations:
thanh trung » thanh tung
thuong cong » thong cong, thuong con, thuong dong
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
cap thuong » chap thuong, ca thuong, cao thuong
trung cap » truong cao, trung tam
cong dan » cong san, cong tan, huong dan
chat ran » chat ban, chat va

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 (chieu sang)) - thanh trung cap thuong cong dan ((chat ran) or (nhat ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chieu sang)) - thanh trung cap thuong cong dan ((chat ran) OR (nhat ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) OR (chieu sang)) - thanh trung cap thuong cong dan ((chat ran) or (nhat ban))*".