Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doi chi, ho chieu, mot chieu
dung cong » dung trong
van thang » van thanh, van khang, van hang
doc hieu » toc thieu, hoc thieu, hoc hien
trinh ap » trinh lap, trinh dap, trinh phap
van than » van thanh, van tuan, van phan
ap dung » xay dung, van dung

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

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