Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
hoc sach » hoc sinh, hoc cac, hoc anh
lam chat » luan chat, cao chat, ly chat
chat tai » chat thai, cao tai, khau tai
hieu tu » chieu tu, hieu tuc, hien tu
tu tham » tru tham, tu cham, tu kham
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
va dan » ca dan, va dau, va dap
va dao » ca dao

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: hoc sach ky nang xa hoi. hieu tu tham thuc ((va hanh) OR (((va dan) OR (va dao)))) lam chat tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ky nang xa hoi. hieu tu tham thuc ((va hanh) or (((va dan) OR (va dao)))) lam chat tai~".
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang xa hoi. hieu tu tham thuc ((va hanh) or (((va dan) OR (va dao)))) lam chat tai*.