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 viet, ve triet
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach
su tien » su kien, su hien, tu tieng
hieu ha » hieu hoa, hieu va, hieu ca
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
y nang » ky nang, ly nang, v nang
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) OR (vu sach)) y nang xa hoi. hieu ha am thuc dang hanh vai ((su triet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu ha am thuc dang hanh vai ((su triet) OR (su tien))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang xa hoi. hieu ha am thuc dang hanh vai ((su triet) or (su tien))*".