Perhaps you should try some spelling variations:
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
doi chieu » doc hieu, doi chi, mot chieu
gian cham » gian cua, gian cac, gian ha
ho chieu » theo chieu, hoc thieu, mot chieu
anh dung » anh dong, anh huong, sach dung
dung cua » dung luan, dung cho

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: ((ho chieu) OR (doi chieu)) sach - anh dung cua ((nhung cong) OR (thong cong)) dan gian cham~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) sach - anh dung cua ((nhung cong) OR (thong cong)) dan gian cham~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) sach - anh dung cua ((nhung cong) OR (thong cong)) dan gian cham*.