Perhaps you should try some spelling variations:
pmien nam » mien nam, phien nam, vien nam
hoc pmien » hoc vien, hoc lien, hoc tien
danh tac » danh bac, doanh tai, danh thuc
hien nam » phien nam, hien nay, vien nam
hoc nghe » hoc nghien, khoe nghe, hoc he
nghe nam » nghe lam, nghiep nam, nghe nano
canh tac » canh tay, canh giac, cong tac
dan bac » dan ba, dong bac, gian bac
van bac » van ban, van bao, van hac
tac va » tac da, tac xa, tuc va
va hoc » van hoc
bac xa » bac ha, tac xa, buc xa
xa hoc » xa hoi, xa hoa, ta hoc

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 va hoc hien nam ) or ((( danh tac va hoc nghe nam ) or ( canh tac va hoc pmien nam ))))) or ((( dan bac xa hoc hien nam ) OR ( van bac xa hoc hien nam ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( danh tac va hoc hien nam ) OR ((( danh tac va hoc nghe nam ) OR ( canh tac va hoc pmien nam ))))) OR ((( dan bac xa hoc hien nam ) OR ( van bac xa hoc hien nam )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( danh tac va hoc hien nam ) or ((( danh tac va hoc nghe nam ) or ( canh tac va hoc pmien nam ))))) or ((( dan bac xa hoc hien nam ) OR ( van bac xa hoc hien nam ))))".
• Adding a wildcard symbol may retrieve word variants: (((( danh tac va hoc hien nam ) or ((( danh tac va hoc nghe nam ) or ( canh tac va hoc pmien nam ))))) or ((( dan bac xa hoc hien nam ) OR ( van bac xa hoc hien nam ))))*.