Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
day hanh » day nhanh, day thanh, dao hanh
thuc day » thuc dan, thuc vat
sach ky » sac ky, sach y, sach ty
hanh de » hanh ve, hanh kem
vu sach » vu bach, su sach, vu khach
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cau
ve cai » va cai, ve tai, ve cau
x hoi » xa hoi, o hoi, x ho
de va » de van, te va, ke va

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang x hoi. hieu ((((ve cam) or (ve cai))) or (ve cac)) thuc day hanh de va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang x hoi. hieu ((((ve cam) OR (ve cai))) OR (ve cac)) thuc day hanh de va triet.
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang x hoi. hieu ((((ve cam) or (ve cai))) or (ve cac)) thuc day hanh de va triet*.