Perhaps you should try some spelling variations:
phuong thao » phuong phap, phuong thuc
cong phuong » cong thuong, cong huong, dong phuong
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
thanh ban » thanh san, thanh van, thanh bac
thao tuan » than tuan, thanh tuan, tran tuan
tuan cau » toan cau, quan cau, tuan cu
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - thanh ban cua cong phuong thao tuan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh ban cua cong phuong thao tuan cau*.