Perhaps you should try some spelling variations:
xanh di » danh di, vanh dai, xanh tai
nang xa » lang xa, nang ma, mang xa
va xanh » va danh, va hanh, va anh
sach ky » sac ky, sach ty, sach kem
hieu va » lieu va, hieu qua
co tuc » co thuc, co tu, co toc
tuc va » thuc va, truc va, tuc xa
va co » vo co
di va » dai va, di vao, doi va
thiet » thieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sach y)) ((nang xa) OR (nang x)) hoi. hieu va co tuc va xanh di va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sach y)) ((nang xa) OR (nang x)) hoi. hieu va co tuc va xanh di va thiet~".
• Adding a wildcard symbol may retrieve word variants: thu ((sach ky) or (sach y)) ((nang xa) OR (nang x)) hoi. hieu va co tuc va xanh di va thiet*.