Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc sai
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
tang mam » dang mam, mang mam, tang dam
ve cham » va cham, ve chat, vu cham
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
cua tre » cua te, cuu tre, cua triet
tang ma » mang may, tang van
sac ky » cac ky, sai ky
ve cam » ve cac, va cam, ve cai

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 ((tang ma) or (tang mam)) hoi. hieu ((ve cam) or (ve cham)) xuc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky ((tang ma) OR (tang mam)) hoi. hieu ((ve cam) OR (ve cham)) xuc van hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sac ky ((tang ma) or (tang mam)) hoi. hieu ((ve cam) or (ve cham)) xuc van hanh vai cua tre*.