Perhaps you should try some spelling variations:
danh tac » danh bac, doanh tai, danh thuc
tac nang » tac vang, tai nang, tap nang
nang hoc » nang doc, nang luc, dong hoc
hien nam » phien nam, hien nay, mien nam
vien nam » vien dai, van nam, hien nay
canh tac » canh giac, cong tac, sang tac
canh tay » thanh tay, ban tay
hoc viet » hoc hien
anh ta » anh tu, anh va, anh tuan

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 nang hoc ((hien nam) or (vien nam)) ) or ( ((((canh tac) or (anh ta))) or (canh tay)) nang hoc viet nam ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( danh tac nang hoc ((hien nam) OR (vien nam)) ) OR ( ((((canh tac) OR (anh ta))) OR (canh tay)) nang hoc viet nam )).
• Adding a wildcard symbol may retrieve word variants: (( danh tac nang hoc ((hien nam) or (vien nam)) ) or ( ((((canh tac) or (anh ta))) or (canh tay)) nang hoc viet nam ))*.