Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
chong cong » cong cong, thong cong, cuong cong
hanh sinh » hanh tinh, hanh dinh, hinh sinh
nang cham » trang cham, nang cao, nang phat
ngan nhat » ngan nam, nam nhat, tran nhat
va chong » va chuong, va cong, va thong
sinh va » sinh vat, tinh va, dinh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - hanh sinh va chong cong ((nang cham) or (ngan nhat)) ran~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - hanh sinh va chong cong ((nang cham) OR (ngan nhat)) ran*.