Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
xuc van » duc van, luc van, vuc van
hieu ve » hieu va, hieu van
tu sach » thu sach, su sach, te sach
mai hoi » mai khoi, lai hoi, mai doi
dai hoi » dai hoc, dai hai, dai moi
ve cam » ve cham, ve cac, va cam
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thuoc sach)) y nang ((mai hoi) or (dai hoi)). hieu ve cam xuc van thanh vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) y nang ((mai hoi) OR (dai hoi)). hieu ve cam xuc van thanh vi cua thuoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) y nang ((mai hoi) or (dai hoi)). hieu ve cam xuc van thanh vi cua thuoc*.