Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
danh hanh » danh thanh, dang hanh, dan hanh
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, hoc thieu, mot chieu
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan ban » van ban
hanh va » hang va, hanh vi
va tong » va thong, va tuong, va trong

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 (doi chieu)) sang - danh hanh va tong cong san toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sang - danh hanh va tong cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sang - danh hanh va tong cong san toan ban*.