Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
nang xa » nang x, lang xa, nang ma
truc va » thuc va, thuc vat, trung va
van tan » van tuan, van ban, van tai
tan cua » than cua, tang cua, toan cua
cua tre » cua te, cuu tre, cua triet
va cau » van cau, va cac, va dau

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 (thuoc sach)) ky nang xa hoi. lieu va cau truc va van tan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (thuoc sach)) ky nang xa hoi. lieu va cau truc va van tan cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (thuoc sach)) ky nang xa hoi. lieu va cau truc va van tan cua tre*.