Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong van » cong vang, cong san, song van
tan cao » toan cao, tay cao, tan ca
tao cao » bao cao, toan cao

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) or (hoc thieu)) sach - thanh trung cua dong cong van ((tan cao) OR (tao cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (hoc thieu)) sach - thanh trung cua dong cong van ((tan cao) OR (tao cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (hoc thieu)) sach - thanh trung cua dong cong van ((tan cao) OR (tao cao))".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (hoc thieu)) sach - thanh trung cua dong cong van ((tan cao) OR (tao cao))*.