Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc sai
tinh vai » tinh va, tinh hai, tinh bai
dang mat » dang vat, dang mau, dung mat
vai cua » dai cua, hai cua, lai cua
va tinh » may tinh
ve cham » va cham, ve chat, vu cham
cua tre » cua te, cuu tre, cua triet
dang ma » dang mau, dang mam, tang ma
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
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 ((dang ma) or (dang mat)) hoi. hieu ((ve cam) or (ve cham)) xuc va tinh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sac ky ((dang ma) OR (dang mat)) hoi. hieu ((ve cam) OR (ve cham)) xuc va tinh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: thuoc sac ky ((dang ma) or (dang mat)) hoi. hieu ((ve cam) or (ve cham)) xuc va tinh vai cua tre*.