Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc sai
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, dua tren
va hanh » van hanh, va thanh, va danh
ve cham » va cham, ve chat, vu cham
dang ma » dang mau, dang mam, dang mat
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
ve cam » ve cac, va cam, ve cai
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sac ky dang ma hoi. hieu ((ve cam) or (ve cham)) xuc va hanh vai ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky dang ma hoi. hieu ((ve cam) OR (ve cham)) xuc va hanh vai ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sac ky dang ma hoi. hieu ((ve cam) or (ve cham)) xuc va hanh vai ((cua tre) OR (cua triet))*".