Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
lai cua » dai cua, hai cua, lai chau
vai cua » dai cua, hai cua, bai cua
xuc van » duc van, luc van, vuc van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
sach ky » sac ky, sach y, sach ty
lai roi » loi roi
lai hoi » dai hoi, lai hoa, mai hoi
ky sang » ky nang, ky dang, ky tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky sang ((lai hoi) or (lai roi)). hieu vu cham xuc van hanh ((vai cua) OR (lai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang ((lai hoi) OR (lai roi)). hieu vu cham xuc van hanh ((vai cua) OR (lai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang ((lai hoi) or (lai roi)). hieu vu cham xuc van hanh ((vai cua) OR (lai cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang ((lai hoi) or (lai roi)). hieu vu cham xuc van hanh ((vai cua) OR (lai cua)) te*.