Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hanh vai » hanh vi, hanh va, hanh tai
cau phuc » cau truc, chau phu, huu phuc
hieu van » hieu va, thien van, lieu va
tu sach » su sach, te sach, tu cach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
phuc va » phuc vu, thuc va, chuc va
van cau » van dau, van hau, van chat
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet

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 (thu sach)) ly ((nang xa) OR (lang xa)) hoi. hieu van cau phuc va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ly ((nang xa) OR (lang xa)) hoi. hieu van cau phuc va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ly ((nang xa) OR (lang xa)) hoi. hieu van cau phuc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ly ((nang xa) OR (lang xa)) hoi. hieu van cau phuc va hanh vai cua tre*.