Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
cua thuoc » cay thuoc, cua nuoc, cua quoc
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
nang dai » nang dau, nang tai, lang dai
thanh vi » hanh vi, thanh va, thanh ve
xuc van » duc van, luc van, vuc van
tu cach » tu cac
hieu va » lieu va, hieu qua
dai hoi » dai hoc, dai hai, dai moi
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) y nang dai hoi. hieu va cam xuc van thanh vi ((cua thuoc) OR (nha thuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) y nang dai hoi. hieu va cam xuc van thanh vi ((cua thuoc) OR (nha thuoc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) y nang dai hoi. hieu va cam xuc van thanh vi ((cua thuoc) OR (nha thuoc))".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) y nang dai hoi. hieu va cam xuc van thanh vi ((cua thuoc) OR (nha thuoc))*.