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
luong manh » duong manh, luong thanh, duong minh
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
cap nhung » cam nhung, vap nhung, dap 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 (thieu quang)) - thanh trung cap nhung luong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu lang) OR (thieu quang)) - thanh trung cap nhung luong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (thieu quang)) - thanh trung cap nhung luong manh toan cau*.