Perhaps you should try some spelling variations:
quang tuan » quang thanh, quan luan, quang cua
nhung cong » dung cong, thong cong, hang cong
hieu sang » chieu sang, hieu lang, hieu quang
tung tuan » trung tuan, hung tuan, trang tuan
cong suat » nang suat, cong san, cong cua
suat phan » sat phan, xuat phan, thuat phan
doc hieu » toc thieu, hoc thieu, hoc hien
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sang - thanh ((tung tuan) OR (quang tuan)) nhung cong suat phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sang - thanh ((tung tuan) OR (quang tuan)) nhung cong suat phan cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - thanh ((tung tuan) OR (quang tuan)) nhung cong suat phan cau*.