Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
chat truc » cau truc, chat xuc
thu sach » tu sach, thuoc sach, thu hoach
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
nang xa » lang xa, nang ma, mang xa
va chat » van chat, va phat, cao chat
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: ((thu sach) or (thuat sach)) y ((nang xa) OR (nang x)) hoi. lieu va chat truc van hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuat sach)) y ((nang xa) OR (nang x)) hoi. lieu va chat truc van hanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (thuat sach)) y ((nang xa) OR (nang x)) hoi. lieu va chat truc van hanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuat sach)) y ((nang xa) OR (nang x)) hoi. lieu va chat truc van hanh dai cua tre*.