Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
cac bao » cach bao, cac bai, cac bac
cac ban » cac dan, cac van, can ban
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y ((nang xa) or (nang x)) hoi. hieu va ((cac bao) OR (cac ban)) va thanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y ((nang xa) OR (nang x)) hoi. hieu va ((cac bao) OR (cac ban)) va thanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y ((nang xa) or (nang x)) hoi. hieu va ((cac bao) OR (cac ban)) va thanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y ((nang xa) or (nang x)) hoi. hieu va ((cac bao) OR (cac ban)) va thanh vai cua triet*.