Perhaps you should try some spelling variations:
truong quan » trong quan, thong quan, luong quan
chieu xanh » chieu sach, chieu sang, chieu tinh
cong thanh » dong thanh, cong trinh, cong tan
thanh chan » thanh phan, thanh nhan, thanh cha
hoc chieu » hoc thieu, ho chieu, hoc hien
truong ca » truong cao, truong va, trong ca
dung cong » dung trong
chan tu » phan tu, han tu, chon tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - thanh ((truong ca) OR (truong quan)) dung cong thanh chan tu~.
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - thanh ((truong ca) or (truong quan)) dung cong thanh chan tu*.