Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, te sach, tu cach
ve cham » va cham, ve chat, vu cham
su sach » so sach, vu sach
nang ma » tang ma, nang cao, mang may
va hanh » van hanh, va thanh, va danh
sang ma » tang ma, sang tao, mang may
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va
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 ((nang ma) or (sang ma)) hoi. hieu ve cham xuc va hanh tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky ((nang ma) OR (sang ma)) hoi. hieu ve cham xuc va hanh tai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky ((nang ma) or (sang ma)) hoi. hieu ve cham xuc va hanh tai va thiet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky ((nang ma) or (sang ma)) hoi. hieu ve cham xuc va hanh tai va thiet*.