Perhaps you should try some spelling variations:
cach thuc » anh thuc, cac thu
su triet » su viet, su tien, ve triet
thanh ve » hanh ve, thanh va, thanh vien
thuc gia » thuc giai, thue gia, thuc dia
sach ky » sac ky, sach ty, sach kem
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
va cach » va cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo ((sach ky) OR (sach y)) lang xa hoi. hieu va cach thuc gia thanh ve ((cuu tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo ((sach ky) OR (sach y)) lang xa hoi. hieu va cach thuc gia thanh ve ((cuu tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "bo ((sach ky) OR (sach y)) lang xa hoi. hieu va cach thuc gia thanh ve ((cuu tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: bo ((sach ky) OR (sach y)) lang xa hoi. hieu va cach thuc gia thanh ve ((cuu tre) or (su triet))*.