Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thong dung » thong cong, thong thuong
dung quang » dang quang, dung quan, luong quang
quang phan » quang chan, quang phat, quang thanh
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cap » truong cao, trung tam
tung cap » cung cap, thong cap, trong cap
phan lap » phan dau

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 - thanh ((tung cap) or (trung cap)) thong dung quang phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - thanh ((tung cap) OR (trung cap)) thong dung quang phan lap.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - thanh ((tung cap) or (trung cap)) thong dung quang phan lap*.