Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
tai hoe » tai he, tai khoa, thai hoc
dai hai » dai han, dai hoi, dai tai
hieu va » lieu va, hieu qua
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
tuan » quan, tran, luan

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 y nang ((tai hoe) or (dai hai)). hieu va cam xuc ((van hanh) or (tuan anh)) vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((tai hoe) OR (dai hai)). hieu va cam xuc ((van hanh) OR (tuan anh)) vi cua thuoc.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ((tai hoe) or (dai hai)). hieu va cam xuc ((van hanh) or (tuan anh)) vi cua thuoc*.