Perhaps you should try some spelling variations:
thuong hang » thuong han, thuong hung, thuong lang
thieu sang » thieu khang, thieu quang, hieu lang
chieu sang » chieu sach, chieu xanh, hieu lang
van thuong » va thuong, van chuong, van phuong
hanh tran » hanh trang, thanh tran, hanh tram
luan ban » luan san, luan han, luat ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sang) or (chieu sang)) - hanh tran van thuong hang va ((luan ban) or (luan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sang)) - hanh tran van thuong hang va ((luan ban) OR (luan van)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (chieu sang)) - hanh tran van thuong hang va ((luan ban) or (luan van))*.