Perhaps you should try some spelling variations:
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ve cham » va cham, ve chat, vu cham
cua duc » cua tuc, cua nuoc, cua quoc
van hoc » van hoa
van hoi » van hoa, van hoe, van loi
ky dang » ky nang, ky danh
vi cua » vai cua, di cua
ve cai » va cai, ve cac, ve tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky dang ((van hoi) or (van hoc)). hieu ((ve cai) or (ve cham)) thuc day hanh vi cua duc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((van hoi) OR (van hoc)). hieu ((ve cai) OR (ve cham)) thuc day hanh vi cua duc.
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((van hoi) or (van hoc)). hieu ((ve cai) or (ve cham)) thuc day hanh vi cua duc*.