Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
mai hoi » mai khoi, dai hoi, lai hoi
huu tre » huu tri, cuu tre, huu them
va nam » van nam, ha nam, va nay
va huu » vu huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ly nang ((xa hoi) or (mai hoi)). lieu va nam thuoc va thanh va huu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly nang ((xa hoi) OR (mai hoi)). lieu va nam thuoc va thanh va huu tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ly nang ((xa hoi) or (mai hoi)). lieu va nam thuoc va thanh va huu tre*.