Perhaps you should try some spelling variations:
canh tac » canh tay, canh giac, cong tac
dong tac » cong tac, dong bac, dong tam
danh cao » doanh cao, danh cho, danh ca
vien nam » vien dai, van nam, vien da
dinh cac » tinh cach, dinh chuc, dinh chau
dong tai » dung tai, luong tai, cong tac
hien nay » hien dai
hoc vien » hoc hien, hoc viet, hoc tieng
ha hien » han hien, hoa hien, va hien
van hao » van bao, van hai, van hac
cao van » cac van, dao van, cao dang
van ha » van hoa, van chat, van hanh
c viet » co viet, ca viet, cu viet
tac va » tac da, tac xa, tuc va
hoc vi » hoc va, hoc viet

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( canh tac va ((hoc vien) or (hoc vi)) nam ) or ((( ((dong tac) or (dong tai)) ((van hao) OR (van dao))c viet nam ) or ((( dinh cac ((van hao) OR (van dao)) vien nam ) or ( danh cao van ha hien nay ))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( canh tac va ((hoc vien) OR (hoc vi)) nam ) OR ((( ((dong tac) OR (dong tai)) ((van hao) OR (van dao))c viet nam ) OR ((( dinh cac ((van hao) OR (van dao)) vien nam ) OR ( danh cao van ha hien nay )))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( canh tac va ((hoc vien) or (hoc vi)) nam ) or ((( ((dong tac) or (dong tai)) ((van hao) OR (van dao))c viet nam ) or ((( dinh cac ((van hao) OR (van dao)) vien nam ) or ( danh cao van ha hien nay ))))))".
• Adding a wildcard symbol may retrieve word variants: (( canh tac va ((hoc vien) or (hoc vi)) nam ) or ((( ((dong tac) or (dong tai)) ((van hao) OR (van dao))c viet nam ) or ((( dinh cac ((van hao) OR (van dao)) vien nam ) or ( danh cao van ha hien nay ))))))*.