Perhaps you should try some spelling variations:
dung luong » dung thuong, dung phuong, dung truong
chinh luat » chinh luan, hinh luat, trinh luat
luong manh » duong manh, luong thanh, duong minh
doi chieu » doi chi, ho chieu, mot chieu
luat dung » suat dung, luat chung, luat quang
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu
toan cao » toan ban, toan tap

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) OR (hoc hien)))) tinh - hanh chinh luat dung luong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (((doc hieu) OR (hoc hien)))) tinh - hanh chinh luat dung luong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (((doc hieu) OR (hoc hien)))) tinh - hanh chinh luat dung luong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (((doc hieu) OR (hoc hien)))) tinh - hanh chinh luat dung luong manh toan cao*.