Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
nang hoat » nang hoa, trang hoat, hang hoa
van hanh » van thanh, ban hanh, van anh
hoat hoi » hoat doi, hoa hoi, hoat ho
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
doi cua » dai cua, hoi cua
va cam » va cham, va cac, va cao
di cua » dai cua, de cua, do cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ky nang hoat hoi. hieu va cam xuc ((van hanh) or (va danh)) ((di cua) OR (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ky nang hoat hoi. hieu va cam xuc ((van hanh) OR (va danh)) ((di cua) OR (doi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ky nang hoat hoi. hieu va cam xuc ((van hanh) or (va danh)) ((di cua) OR (doi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ky nang hoat hoi. hieu va cam xuc ((van hanh) or (va danh)) ((di cua) OR (doi cua)) tre*.