Perhaps you should try some spelling variations:
xa trong » xa truong, ca trong, va trong
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
doi cua » dai cua, hoi cua
va cam » va cham, va cao, va cai

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

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