Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thanh trung » thanh tung
mot chieu » doi chieu
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
cong san » cong tac
than cau » toan cau, phan cau, than cap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (mot chieu)) sach - thanh trung va thuong cong san ((than cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (mot chieu)) sach - thanh trung va thuong cong san ((than cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (mot chieu)) sach - thanh trung va thuong cong san ((than cau) OR (toan ban))*.