Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
hanh dai » hanh tai, hanh dao, vanh dai
so sach » so sanh, bo sach, co sach
tai hoa » tai khoa, thai hoa, thi hoa
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cau » ke cau, va cau, ve cac
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang tai hoa. hieu ve cau ((luc va) OR (tuc va)) hanh dai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang tai hoa. hieu ve cau ((luc va) OR (tuc va)) hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach y nang tai hoa. hieu ve cau ((luc va) OR (tuc va)) hanh dai cua tre*.