Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
cac xuc » cac nuoc, chat xuc, cac cuoc
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
ca cua » co cua

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 nang mai hoi. hieu va ((cac xuc) or (cam xuc)) ((va danh) or (qua kinh)) ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang mai hoi. hieu va ((cac xuc) OR (cam xuc)) ((va danh) OR (qua kinh)) ca cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang mai hoi. hieu va ((cac xuc) or (cam xuc)) ((va danh) or (qua kinh)) ca cua tre*.