Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
han tai » hang tai, nhan tai, van tai
ma hoi » mai hoi, xa hoi, ma hoa
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
tai va » thai va, mai va, tri va
thiet » thieu

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) OR (su sach)) ky tang ma hoi. hieu vu cham xuc va han tai va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky tang ma hoi. hieu vu cham xuc va han tai va thiet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky tang ma hoi. hieu vu cham xuc va han tai va thiet*.