Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
hieu van » hieu va, thien van, lieu va
thu sach » thuat sach, thuoc sach, thu hoach
van lam » van nam
danh vi » hanh vi, dinh vi, danh di
tu sach » su sach, te sach, tu cach
nang o » nang co, nang ho, nang ro
xuc va » tuc va, luc va, xac va
vi cua » vai cua, di cua
o hoc » co hoc, mo hoc, so hoc

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)) ky nang o hoc. hieu van lam ((xuc va) or (duc va)) danh vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang o hoc. hieu van lam ((xuc va) OR (duc va)) danh vi cua thuoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang o hoc. hieu van lam ((xuc va) or (duc va)) danh vi cua thuoc*.