Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap nhung
cong san » cong tac
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh trung cap nhung ((cong thanh) or (cong san)) ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung cap nhung ((cong thanh) OR (cong san)) ((phan cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cap nhung ((cong thanh) or (cong san)) ((phan cau) or (phan cac))*.