Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
hanh dai » hanh tai, hanh dao, vanh dai
tu sach » thu sach, su sach, te sach
tai hoi » tai khoi, dai hoi, tai hai
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
luc va » tuc va, loc va

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 y nang tai hoi. hieu ((ve cam) OR (ve cac)) ((luc va) or (duc va)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang tai hoi. hieu ((ve cam) OR (ve cac)) ((luc va) OR (duc va)) hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang tai hoi. hieu ((ve cam) OR (ve cac)) ((luc va) or (duc va)) hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang tai hoi. hieu ((ve cam) OR (ve cac)) ((luc va) or (duc va)) hanh dai cua tre*.