Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thanh trung » thanh tung
hoc thieu » toc thieu, hoc hien
vat dung » va dung, viet dung, mat duong
van dung » van dong, xay dung, tin dung
cac ran » cac dan, cac van, cac ban
ran cau » van cau, ban cau, can cau

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 trung ((vat dung) or (van dung)) trong cac ran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu khang - thanh trung ((vat dung) OR (van dung)) trong cac ran cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu khang - thanh trung ((vat dung) or (van dung)) trong cac ran cau*.