Perhaps you should try some spelling variations:
luan thong » luan phong, luan tuong, luat thong
chieu sang » chieu sach, chieu xanh, hieu lang
thong mang » thong quang, thong minh, thong van
hanh dung » thanh dung, anh dung, hanh dong
mang toan » manh toan, dang toan, mang thang
chi hanh » chi nhanh, chi thanh, thi hanh
toan tap » toan ban

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 sang) or (chi hanh)) - hanh dung luan thong thong mang toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chi hanh)) - hanh dung luan thong thong mang toan tap*.