Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chieu sang » chieu sach, chieu xanh, hieu lang
trinh quan » tinh quang, trinh luat, trinh han
chuc danh » chuc nganh, chuc nang, thuc dan
dung cong » dung trong
thang va » hang va, trang va, thong va
quan tam » quan tai, quan am, quan nam
va dung » van dung, va duong, vat dung

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chuc danh) OR (thuc hanh))) OR (chieu sang)) - thanh thang va dung cong trinh quan tam~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((chuc danh) OR (thuc hanh))) or (chieu sang)) - thanh thang va dung cong trinh quan tam~".
• Adding a wildcard symbol may retrieve word variants: theo ((((chuc danh) OR (thuc hanh))) or (chieu sang)) - thanh thang va dung cong trinh quan tam*.