Perhaps you should try some spelling variations:
doi chieu » doi chi, ho chieu, mot chieu
xanh hanh » danh thanh, ban hanh, van hanh
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
phan cau » phan dau, phan cac, phan tu
toan ban » van ban
hanh va » hang va, hanh vi
va dung » van dung, va duong, vat dung

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)) xanh - xanh hanh va dung cong tac ((phan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) xanh - xanh hanh va dung cong tac ((phan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doc hieu)) xanh - xanh hanh va dung cong tac ((phan cau) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doc hieu)) xanh - xanh hanh va dung cong tac ((phan cau) or (toan ban))*.