Perhaps you should try some spelling variations:
lan thuong » han thuong, hang thuong, phan thuong
lan phuong » van phuong, dan phuong, bang phuong
hanh dung » thanh dung, anh dung, hanh dong
luong dan » huong dan, luong dao, luong van
doc lieu » duoc lieu, du lieu, so lieu
doc hieu » toc thieu, hoc thieu, hoc hien
dan phan » doan phan, dan chan, van phan
phan cau » phan dau, phan cac, phan tu

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: ((doc lieu) OR (doc hieu)) tinh - hanh dung ((lan thuong) OR (lan phuong)) luong dan phan cau~.
• Adding a wildcard symbol may retrieve word variants: ((doc lieu) or (doc hieu)) tinh - hanh dung ((lan thuong) or (lan phuong)) luong dan phan cau*.