Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thi chieu » thi chien, thi hieu, theo chieu
hanh tang » hanh trang, anh tang, hanh mang
cua nhung » va nhung
theo chu » theo chieu, cho chu, chao chu
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
van chat » cao chat
van cau » van dau, van hau, toan cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (theo chu)) sach - hanh tang cua nhung cong tac ((van cau) OR (van chat))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (theo chu)) sach - hanh tang cua nhung cong tac ((van cau) OR (van chat)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi chieu) or (theo chu)) sach - hanh tang cua nhung cong tac ((van cau) OR (van chat))".
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (theo chu)) sach - hanh tang cua nhung cong tac ((van cau) OR (van chat))*.