Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
doi chieu » doc hieu, ho chieu, mot chieu
dung cong » dung trong
trung ap » trung cap, trung lap, trung tam
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat
doi chi » doi khi
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 (doi chi)) xanh - hanh trung ap dung cong ((dan than) OR (dan chan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) xanh - hanh trung ap dung cong ((dan than) or (dan chan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) xanh - hanh trung ap dung cong ((dan than) or (dan chan)) cau*.