Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
trinh quan » tinh quang, trinh luat, trinh han
cong huong » cong thuong, cong luong, cong hung
huong tuan » huong tran, hung tuan, duong tuan
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh luan
dang cong » dung cong
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: hoc thieu sang - hanh ((trinh cua) or (trinh quan)) dang cong huong tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - hanh ((trinh cua) OR (trinh quan)) dang cong huong tuan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - hanh ((trinh cua) or (trinh quan)) dang cong huong tuan cau*.