Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
tranh va » tranh van, trang va, trinh va
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh tranh va ((nhung cong) OR (thong cong)) tac ((toan tap) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh tranh va ((nhung cong) OR (thong cong)) tac ((toan tap) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh tranh va ((nhung cong) OR (thong cong)) tac ((toan tap) or (van ban))*.