Perhaps you should try some spelling variations:
dung mot » dung mo, dung moi, dung co
hien nam » phien nam, hien nay, vien nam
nang hoc » nang doc, nang luc, dong hoc
tac nang » tac vang, tai nang, tap nang
tien nam » tien lam, vien nam, mien nam
moc tien » moc tren, hoc tien, mo tien
cong moc » cong coc, cong mot, cong uoc
danh tac » canh tac, danh bac, danh thuc
tai dung » trai dung, thi dung, mai dung
hoc vien » hoc tieng, hoc vi
mot tan » mot lan, mot thanh, mot lang
tac can » tac van, tac vang, tac danh
tan nam » tang nam, van nam, dan nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( danh ((tac can) OR (tac quan)) ((hoc vien) or (hoc viet)) nam ) or ((((( doanh tai dung mot tan nam ) or ( doanh tai cong moc tien nam ))) or ((( danh tac nang hoc hien nam ) or ( danh tac ((trung hoc) or (trung quoc)) hien nam ))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( danh ((tac can) OR (tac quan)) ((hoc vien) OR (hoc viet)) nam ) OR ((((( doanh tai dung mot tan nam ) OR ( doanh tai cong moc tien nam ))) OR ((( danh tac nang hoc hien nam ) OR ( danh tac ((trung hoc) OR (trung quoc)) hien nam ))))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( danh ((tac can) OR (tac quan)) ((hoc vien) or (hoc viet)) nam ) or ((((( doanh tai dung mot tan nam ) or ( doanh tai cong moc tien nam ))) or ((( danh tac nang hoc hien nam ) or ( danh tac ((trung hoc) or (trung quoc)) hien nam ))))))*".