Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
hanh doi » thanh doi, hanh noi, hang doi
sach kem » hanh kem
thuoc va » thuc va, thuoc ma, thuong va
hieu ve » hieu va, hieu van
doi cua » dai cua, hoi cua
va hanh » van hanh, va thanh, va danh
sach ky » sach y, sach ty, sach hay
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
ve nam » he nam, va nam, le nam
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((((sach ky) or (sach kem))) or (sac ky)) nang xa hoi. hieu ve nam thuoc va hanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach ky) OR (sach kem))) OR (sac ky)) nang xa hoi. hieu ve nam thuoc va hanh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((((sach ky) or (sach kem))) or (sac ky)) nang xa hoi. hieu ve nam thuoc va hanh doi cua tre*.