Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
chieu sang » chieu sach, chieu xanh, hieu lang
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
phong cau » thong cau, phong cac, phong cai
thong cap » thong cac, trung cap, thong cua
cua dung » cua dang, cua dong, qua dung

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 - canh tranh cua dung cong ngang ((phong cau) or (thong cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - canh tranh cua dung cong ngang ((phong cau) OR (thong cap)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - canh tranh cua dung cong ngang ((phong cau) or (thong cap))*.