Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
van hanh » van thanh, ban hanh, van anh
sach ty » sach y, sach tu, sach thu
hanh di » hanh vi, hanh de, hang di
tuc van » thuc van, truc van, tuc va
ve cham » va cham, ve chat, vu cham
te sach » toc sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » va cam, ve cai, ve cau
di cua » dai cua, doi cua, de cua
ve cac » va cac, vien cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ((((ve cam) OR (ve cac))) OR (ve cham)) tuc van hanh di cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu ((((ve cam) OR (ve cac))) or (ve cham)) tuc van hanh di cua viet~".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ((((ve cam) OR (ve cac))) or (ve cham)) tuc van hanh di cua viet*.