Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
dung chong » dung cong, dung chung, dung hong
chong phap » phuong phap
doi chieu » doc hieu, doi chi, ho chieu
tung cao » truong cao, trung cap, quang cao
nung cao » nang cao, nhung cau, quang cao
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: doi chieu sang - thanh ((tung cao) or (nung cao)) dung chong phap ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((tung cao) OR (nung cao)) dung chong phap ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((tung cao) or (nung cao)) dung chong phap ((toan tap) or (toan ban))*.