Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
trang qua » trong qua, trong quan, trang tuan
dung dung » ung dung, dung ung, dung dong
qua dung » quang dung, su dung, qua song
dung thi » dung tai, dung tri, dung chi
thi dan » thi doan, thi lan, thi dai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (hieu lang)) - hanh trang qua dung dung thi dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu lang)) - hanh trang qua dung dung thi dan ca.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu lang)) - hanh trang qua dung dung thi dan ca*.