Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
nhung cong » dung cong, thong cong, hang cong
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
cong anh » cong danh, dong anh, hong anh
tuan cau » toan cau, quan cau, tuan cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (hieu quang)) - hanh ((tinh cua) OR (trinh cua)) nhung cong anh tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu quang)) - hanh ((tinh cua) OR (trinh cua)) nhung cong anh tuan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu quang)) - hanh ((tinh cua) OR (trinh cua)) nhung cong anh tuan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu quang)) - hanh ((tinh cua) OR (trinh cua)) nhung cong anh tuan cau*.