Perhaps you should try some spelling variations:
pvien nam » vien nam, mien nam
hoi pvien » hoi vien, hoi viet, hoa vien
phien nam » hien nay, phien ban, vien nam
hoi phien » hoi phieu, thai phien, hoi phan
thoi hien » thi hien, thoi mien, hoc hien
canh tac » canh tay, canh giac, cong tac
hien nam » hien nay, vien nam, mien nam
danh bac » doanh bac, danh bat, dan bac
vien dai » hien dai
hoc vien » hoc hien, hoc tieng, hoc vi
danh tac » doanh tai, danh thuc, danh tu
hoc viet » hoc hien
da thoi » dao thoi, dat thoi, da thai
bac xa » bac ha, buc xa, bac a
tac xa » tuc xa
xa hoc » va hoc, 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 bac xa hoc viet nam ) or ((( danh tac xa hoc vien dai ) or ((( canh tac da thoi hien nam ) or ((( danh tac xa hoi phien nam ) or ( danh tac xa hoi pvien nam ))))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( danh bac xa hoc viet nam ) OR ((( danh tac xa hoc vien dai ) OR ((( canh tac da thoi hien nam ) OR ((( danh tac xa hoi phien nam ) OR ( danh tac xa hoi pvien nam )))))))).
• Adding a wildcard symbol may retrieve word variants: (( danh bac xa hoc viet nam ) or ((( danh tac xa hoc vien dai ) or ((( canh tac da thoi hien nam ) or ((( danh tac xa hoi phien nam ) or ( danh tac xa hoi pvien nam ))))))))*.