Perhaps you should try some spelling variations:
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tinh cua » trinh cua, sinh cua, tinh chat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
cua tre » cua te, cuu tre, cua triet
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: te sach ky tang xa hoi. hieu ve chat ((tuc va) or (thuc vat)) hanh tinh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang xa hoi. hieu ve chat ((tuc va) OR (thuc vat)) hanh tinh cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky tang xa hoi. hieu ve chat ((tuc va) or (thuc vat)) hanh tinh cua tre*.