Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
van tuan » van quan, van ban, anh tuan
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
dinh cu » dinh cuu, dinh chuc, dinh chau
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cu tre » cu tren, cua tre, cuu tre

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 xa) or (nang ma)) hoi. hieu va cham xuc ((van hanh) or (van tuan)) dinh cu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang ma)) hoi. hieu va cham xuc ((van hanh) OR (van tuan)) dinh cu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang ma)) hoi. hieu va cham xuc ((van hanh) or (van tuan)) dinh cu tre*.