Perhaps you should try some spelling variations:
nang rong » nang trong, nang song, nang dong
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc va » thuc va, thuoc ma, thuong va
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
va nam » van nam, ha nam, va nay
cua tu » cua tuc, cua su, cua cu

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 ((nang rong) or (nang ma)) hoi. lieu va nam thuoc va hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang rong) OR (nang ma)) hoi. lieu va nam thuoc va hanh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang rong) or (nang ma)) hoi. lieu va nam thuoc va hanh vai cua tu*.