Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
nang tai » hang tai, tang tai, sang tai
van hanh » van thanh, ban hanh, van anh
thu sach » thuat sach, thuoc sach, thu hoach
ly nang » ky nang, ly hang, ly vang
tai hoi » tai khoi, dai hoi, tai hai
hieu va » lieu va
xuc van » duc van, luc van, vuc van
tu sach » su sach, te sach, tu cach
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 (thu sach)) ly nang tai hoi. ((hieu va) or (hieu qua)) cam xuc van hanh vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ly nang tai hoi. ((hieu va) OR (hieu qua)) cam xuc van hanh vi cua thuoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ly nang tai hoi. ((hieu va) or (hieu qua)) cam xuc van hanh vi cua thuoc*.