Perhaps you should try some spelling variations:
danh tac » canh tac, danh bac, doanh tai
dai nang » dai dang, dai thang, ki nang
ban hang » ngan hang
hien nam » phien nam, hien nay, vien nam
luc viet » luoc viet, tuc viet, duc viet
hang hoc » hang hoa, nang hoc, bang hoc
tai nang » thi nang, tai lang, tap nang
tac van » tac vang, cac van, tac va
da nang » cam nang, kha nang, cao nang
dan bac » dan ba, van bac, dong bac
bac van » bach van, cac van, ban van
dan ban » van ban, can ban, dan ba
van hoc » van hoa

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 van hoc viet nam ) or ( doanh ((tai nang) or (((dai nang) OR (da nang)))) luc viet nam ))) or ((( dan bac van hoc hien nam ) or ( dan ban hang hoc hien nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( danh tac van hoc viet nam ) OR ( doanh ((tai nang) OR (((dai nang) OR (da nang)))) luc viet nam ))) OR ((( dan bac van hoc hien nam ) OR ( dan ban hang hoc hien nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( danh tac van hoc viet nam ) or ( doanh ((tai nang) or (((dai nang) OR (da nang)))) luc viet nam ))) or ((( dan bac van hoc hien nam ) or ( dan ban hang hoc hien nam ))))".
• Adding a wildcard symbol may retrieve word variants: (((( danh tac van hoc viet nam ) or ( doanh ((tai nang) or (((dai nang) OR (da nang)))) luc viet nam ))) or ((( dan bac van hoc hien nam ) or ( dan ban hang hoc hien nam ))))*.