Perhaps you should try some spelling variations:
cong cua » cong cu, dong cua, huong cua
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
ky cong » ke cong, ly cong, khu cong
cua hoi » cua moi
van lam » van nam
lam xuc » cam xuc, lam duoc
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 cong cua hoi. hieu van lam xuc ((va danh) or (va thanh)) lai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky cong cua hoi. hieu van lam xuc ((va danh) OR (va thanh)) lai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky cong cua hoi. hieu van lam xuc ((va danh) or (va thanh)) lai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: so sach ky cong cua hoi. hieu van lam xuc ((va danh) or (va thanh)) lai ((cua tre) OR (cua te))*.