Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thanh trung » thanh tung
nhung luong » hung luong, nhung huong, nhung tuong
chieu sang » chieu sach, chieu xanh, nhieu tang
luong manh » duong manh, luong thanh, duong minh
hieu lang » hieu quang, nhieu tang, hieu van
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((hieu lang) or (chieu sang))) or (thieu quang)) - thanh trung cua nhung luong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu lang) OR (chieu sang))) OR (thieu quang)) - thanh trung cua nhung luong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu lang) or (chieu sang))) or (thieu quang)) - thanh trung cua nhung luong manh toan cau*.