Perhaps you should try some spelling variations:
thieu khang » chieu khong
thieu quang » hieu quang, thien quan, trien quang
thanh trung » thanh tung
nguong dan » huong dan
trung cua » truong cua, trung tuan, trung cap
cua hang » cua dang, cua nhung, cua cong
nong dan » cong dan, nong san, huong dan
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 ((thieu khang) or (thieu quang)) - thanh trung cua hang ((nong dan) or (nguong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu khang) OR (thieu quang)) - thanh trung cua hang ((nong dan) OR (nguong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu khang) or (thieu quang)) - thanh trung cua hang ((nong dan) or (nguong dan)) toan cao*.