Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thanh trung » thanh tung
nhung tuong » nhung huong, nhung phuong, hung vuong
thieu sang » chieu sang, thieu quang, hieu lang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
tuong anh » truong anh, tuong lanh, trong anh
tuan cua » quan cua, than cua, tan cua

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) or (thieu khang)) - thanh trung cua nhung tuong anh tuan cua~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu khang)) - thanh trung cua nhung tuong anh tuan cua.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu khang)) - thanh trung cua nhung tuong anh tuan cua*.