Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
lam chat » luan chat, cao chat, ly chat
va thanh » gia thanh, ban thanh, va tinh
chat tai » chat thai, cao tai, khau tai
tang xa » trang xa, tang ma, lang xa
hieu tu » chieu tu, hieu tuc, hien tu
sach ky » sach y, sach ty, sach kem
va danh » va dinh, va dan, va hanh
tu tham » tru tham, tu cham, tu kham
sac ky » cac ky, sai ky

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