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
trung cap » truong cao, trung tam
cong tinh » cong trinh, cong vinh, long tinh
han cong » phan cong, hang cong, hanh cong
khan cap » khan ap, than cap, khoan cam
phan lap » phan dau
cap han » cap phan, cap can, cap hay

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 han cong tinh ((khan cap) OR (phan lap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh trung cap han cong tinh ((khan cap) OR (phan lap))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cap han cong tinh ((khan cap) OR (phan lap))*.