Perhaps you should try some spelling variations:
thuc dang » thuoc dang, thuc dan, thuc dung
dang hanh » dang thanh, ban hanh, dang van
su triet » su tien, ve triet
hanh vai » hanh vi, hanh va, hanh tai
su viet » so viet
sach ky » sac ky, sach ty, sach kem
hieu ha » hieu hoa, hieu va, hieu ca
x hoi » xa hoi, o hoi, x ho
ha am » hoa am, ha nam, ha lam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) or (sach y)) nang x hoi. hieu ha am thuc dang hanh vai ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach y)) nang x hoi. hieu ha am thuc dang hanh vai ((su triet) OR (su viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) or (sach y)) nang x hoi. hieu ha am thuc dang hanh vai ((su triet) OR (su viet))*".