Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cam » trung tam, trung cap, trung nam
cam nhung » cam hung, nam nhung, tham nhung
khoan cam » khoa cam, khoan va, phan cam
cong ban » cong bang, cong tan, cong dan
cong san » cong tac

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 - thanh trung cam nhung ((cong ban) OR (cong san)) khoan cam~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - thanh trung cam nhung ((cong ban) OR (cong san)) khoan cam".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh trung cam nhung ((cong ban) OR (cong san)) khoan cam*.