Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thu sach » thuat sach, thuoc sach, thu hoach
pham tuc » pham thuc, pham duc, pham tu
va danh » va dinh, va hanh, dia danh
hieu so » thieu so
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
va nang » van nang, da nang, cam nang
so pham » son pham, su pham, so phan
va dan » ca dan, va dao, va dau
vi cua » vai cua, di cua

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) or (thu sach)) va nang xa hoi. hieu so pham tuc ((va danh) or (va dan)) vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) va nang xa hoi. hieu so pham tuc ((va danh) OR (va dan)) vi cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) va nang xa hoi. hieu so pham tuc ((va danh) or (va dan)) vi cua viet*.