Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, pham duc
hanh cat » hanh cac, hanh luat, nhanh cay
sang mai » sang ma, sang tai, lang mai
su sach » so sach, vu sach
hanh ca » hanh cac, hanh cua, hanh cad
sach ky » sac ky, sach y, sach ty
su viet » so viet
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai 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: su sach ky sang mai hoi. hieu ve ((cham xuc) or (cham soc)) va ((hanh ca) OR (hanh cat)) su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang mai hoi. hieu ve ((cham xuc) OR (cham soc)) va ((hanh ca) OR (hanh cat)) su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky sang mai hoi. hieu ve ((cham xuc) or (cham soc)) va ((hanh ca) OR (hanh cat)) su viet".
• Adding a wildcard symbol may retrieve word variants: su sach ky sang mai hoi. hieu ve ((cham xuc) or (cham soc)) va ((hanh ca) OR (hanh cat)) su viet*.