Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
toan ban » van 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 chieu sang - hanh ((trung cua) or (trung cap)) dung cong tan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh ((trung cua) OR (trung cap)) dung cong tan ((toan ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - hanh ((trung cua) or (trung cap)) dung cong tan ((toan ban) or (toan tap))*.