Perhaps you should try some spelling variations:
danh tac » danh bac, doanh tai, danh thuc
dong luc » nang luc
danh cao » doanh cao, danh cho, dinh cao
tren nam » teen nam, tren lam, tren nen
mien nam » vien nam, viet nam, mien nui
hien nay » hien dai
vien dai » hien dai
hoc vien » hoc hien, hoc viet, hoc tieng
canh tac » canh tay, canh giac, cong tac
danh ca » dan ca, doanh cua, danh cho
ha hien » han hien, hoa hien, va hien
cao van » cac van, dao van, cao dang
van ha » van chat, van hanh, van phan

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: (( ((danh tac) OR (canh tac)) va hoc vien dai ) OR ((( dong luc ((van hoc) OR (van hoa)) mien nam ) OR ((( danh ca ((van hoc) OR (van hoa)) tren nam ) OR ( danh cao van ha hien nay ))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((danh tac) OR (canh tac)) va hoc vien dai ) or ((( dong luc ((van hoc) or (van hoa)) mien nam ) or ((( danh ca ((van hoc) or (van hoa)) tren nam ) or ( danh cao van ha hien nay ))))))~".
• Adding a wildcard symbol may retrieve word variants: (( ((danh tac) OR (canh tac)) va hoc vien dai ) or ((( dong luc ((van hoc) or (van hoa)) mien nam ) or ((( danh ca ((van hoc) or (van hoa)) tren nam ) or ( danh cao van ha hien nay ))))))*.