Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu lang » chieu sang, hieu quang, nhieu tang
hanh sinh » hanh tinh, hanh dinh, hinh sinh
dung cong » dung trong
cong van » cong vang, cong san, song van
tuan cau » quan cau, tuan cu, thuan cam
toan cau » toan cao, toan ban, toan tap
sinh va » sinh vat, tinh va, dinh van
va dung » van dung, va duong, vat dung

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 xanh) or (hieu lang)) - hanh sinh va dung cong van ((tuan cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu lang)) - hanh sinh va dung cong van ((tuan cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu lang)) - hanh sinh va dung cong van ((tuan cau) or (toan cau))*.