Perhaps you should try some spelling variations:
canh trinh » canh tranh, canh tinh, anh trinh
hanh trinh » canh tranh, hanh chinh
dung huong » dung thuong, dung phuong, dong huong
doi chieu » doi chi, ho chieu, mot chieu
huong lan » phuong lan, thuong lan, huong dan
doc hieu » toc thieu, hoc thieu, hoc hien
lan than » ban than, van than, dan than
than cau » toan cau, phan cau, than cap

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