Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, thi chieu
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
tang luan » dung luan
theo chu » cho chu, chao chu, theo yeu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 (theo chu)) sach - hanh ((trung cua) or (tang luan)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) sach - hanh ((trung cua) OR (tang luan)) nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (theo chu)) sach - hanh ((trung cua) or (tang luan)) nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (theo chu)) sach - hanh ((trung cua) or (tang luan)) nhung cong dan toan cao*.