Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
thu sach » tu sach, thuat sach, thuoc sach
hien cac » thien cac, vien cac, hieu cac
va hanh » van hanh, va thanh, ban hanh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cua tre » cuu tre, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, dia danh
cua te » cua tu
cac lo » cac lop, cac co, cac bo

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky lang xa hoi. hieu hien cac lo ((va danh) OR (va hanh)) dai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky lang xa hoi. hieu hien cac lo ((va danh) OR (va hanh)) dai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky lang xa hoi. hieu hien cac lo ((va danh) OR (va hanh)) dai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky lang xa hoi. hieu hien cac lo ((va danh) OR (va hanh)) dai ((cua tre) or (cua te))*.