Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
manh toan » thanh toan, anh tuan, tinh toan
tung cua » trung cua, tuong cua, tang cua
dung cua » dung luan, dung cho
van toan » van tuan, van tan, van thanh

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 - thanh ((tung cua) or (dung cua)) hang cong ((manh toan) or (van toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - thanh ((tung cua) OR (dung cua)) hang cong ((manh toan) OR (van toan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - thanh ((tung cua) or (dung cua)) hang cong ((manh toan) or (van toan)) cao*.