Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc sai
hanh doi » thanh doi, hanh noi, hang doi
hieu ve » hieu va, hieu van
cau hoc » cau hoi, cau hoa, cao hoc
va hanh » van hanh, va thanh, ban hanh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, ve cac
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ve cau hoc va hanh doi cua tre~.
• Adding a wildcard symbol may retrieve word variants: thuoc sac ky nang x hoi. hieu ve cau hoc va hanh doi cua tre*.