Perhaps you should try some spelling variations:
can thiet » dan thiet, cac thiet, cad thiet
van thien » van tien, van hien, van chien
cham xuc » cam xuc, chat xuc, cham soc
ky dang » ky nang, ky danh
dang ma » dang mau, dang mam, dang mat
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky dang ma hoi. hieu ve cham xuc va hanh vi ((van thien) or (can thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky dang ma hoi. hieu ve cham xuc va hanh vi ((van thien) OR (can thiet)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky dang ma hoi. hieu ve cham xuc va hanh vi ((van thien) or (can thiet))*.