Perhaps you should try some spelling variations:
thien van » thi van
cua thuoc » nha thuoc, cay thuoc, cua nuoc
thu sach » thuat sach, thuoc sach, thu hoach
nang hoa » nang hoat, hang hoa, nang hoc
tu sach » su sach, te sach, tu cach
hoa doi » hoa dai, hoc doi, xoa doi
danh vi » hanh vi, dinh vi, danh di
luc va » tuc va, loc va
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)) ky nang hoa doi. thien van nam ((luc 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 hoa doi. thien van nam ((luc va) OR (duc va)) danh vi cua thuoc.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang hoa doi. thien van nam ((luc va) or (duc va)) danh vi cua thuoc*.