Perhaps you should try some spelling variations:
hoc phien » hoc hien, thuoc phien, hoc nghien
danh bac » doanh bac, danh bat, dan bac
hien nam » phien nam, vien nam, mien nam
hien nay » hien dai
canh tac » canh tay, canh giac, cong tac
tac vung » tac dung, tac vang, tay vung
vung hoc » dung hoc, vung moc, trung hoc
hoc phan » hoc dan, hoc pho
phan van » pham van, thanh van, luan van
canh cac » hanh cac, canh giac, canh chau
cac van » cac dan
van hoc » van hoa
bac va » ban va, bac ha, bao va

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