Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
va thanh » gia thanh, ban thanh, le thanh
nang xa » nang x, lang xa, nang ma
va pham » van pham, va phat, va phap
va tinh » may tinh
lai cua » dai cua, hai cua, lai chau
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: tu ((sach thu) or (sach thue)) nang xa hoi. lieu va pham duc ((va thanh) OR (va tinh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) nang xa hoi. lieu va pham duc ((va thanh) OR (va tinh)) lai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) or (sach thue)) nang xa hoi. lieu va pham duc ((va thanh) OR (va tinh)) lai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sach thue)) nang xa hoi. lieu va pham duc ((va thanh) OR (va tinh)) lai cua tre*.