Perhaps you should try some spelling variations:
thuoc sai » thuoc tai, thuoc san, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
ve cham » va cham, vu cham, ve chim
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
ve chat » va chat, van chat
cua tre » cua te, cuu tre, cua triet
dang ma » dang mau, dang mam, dang mat
ky dang » ky nang, ky danh
sai ky » sac ky
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 sai ky dang ma hoi. hieu ((ve cam) or (((ve cham) OR (ve chat)))) xuc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sai ky dang ma hoi. hieu ((ve cam) OR (((ve cham) OR (ve chat)))) xuc van hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sai ky dang ma hoi. hieu ((ve cam) or (((ve cham) OR (ve chat)))) xuc van hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sai ky dang ma hoi. hieu ((ve cam) or (((ve cham) OR (ve chat)))) xuc van hanh vai cua tre*.