Perhaps you should try some spelling variations:
thanh quang » nhanh quang, thanh quan, than quang
chieu sang » chieu sach, chieu xanh, nhieu tang
tuan nhung » quan nhung, tuan hung, thuat nhung
hieu lang » hieu quang, nhieu tang, hieu van
tran hung » tran hong, tran quang, tran hoang
cong lang » cong vang, cong luong, cong quang
lang hang » lang thang, hang hang, nang hang
hang dau » hang va, hang tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu lang) OR (chieu sang)) - thanh quang ((tuan nhung) or (tran hung)) cong lang hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (chieu sang)) - thanh quang ((tuan nhung) OR (tran hung)) cong lang hang dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) OR (chieu sang)) - thanh quang ((tuan nhung) or (tran hung)) cong lang hang dau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) OR (chieu sang)) - thanh quang ((tuan nhung) or (tran hung)) cong lang hang dau*.