Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doi chi, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
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: ((doi chieu) OR (doc hieu)) sach - canh tranh cua tong ((cong dan) or (cong thanh)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - canh tranh cua tong ((cong dan) OR (cong thanh)) phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) sach - canh tranh cua tong ((cong dan) or (cong thanh)) phan cac".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) sach - canh tranh cua tong ((cong dan) or (cong thanh)) phan cac*.