Perhaps you should try some spelling variations:
tay nguoi » toc nguoi, dao nguoi
tinh duoc » trinh duoc, sinh duoc, tinh duc
loi nguoi » loai nguoi, moi nguoi, doi nguoi
trinh doc » trinh do, trinh hoa, trinh co
hanh hoc » thanh hoc, hinh hoc, anh hoc
duoc loi » duoc li, duc loi, duoc hoi
tu trinh » tieu trinh, qua trinh, quy trinh
li nguoi » le nguoi, ly nguoi, gi nguoi
tu hanh » du hanh, lu hanh, thuc hanh
hoc tay » toc tay, hoc tap, hoc may
tu tinh » tru tinh, tu tin, thue tinh
doc li » duoc li, doc vi, hoc li

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu hanh hoc tay nguoi ) or ((( tu tinh duoc loi nguoi ) or ( tu trinh doc li nguoi ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu hanh hoc tay nguoi ) OR ((( tu tinh duoc loi nguoi ) OR ( tu trinh doc li nguoi )))).
• Adding a wildcard symbol may retrieve word variants: (( tu hanh hoc tay nguoi ) or ((( tu tinh duoc loi nguoi ) or ( tu trinh doc li nguoi ))))*.