Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van hanh » van thanh, ban hanh, van ban
van anh » van thanh, tuan anh, van minh
tu sach » thu sach, su sach, te sach
dai hai » dai han, dai hoi, dai tai
tai hoe » tai he, tai khoa, thai hoc
hieu ve » hieu va, hieu van
sach v » sach va, sach y, sach 2
ve cam » ve cham, ve cac, va cam
v nang » va nang, vu nang, van nang
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 v nang ((tai hoe) or (dai hai)). hieu ve cam xuc ((van hanh) or (van anh)) vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang ((tai hoe) OR (dai hai)). hieu ve cam xuc ((van hanh) OR (van anh)) vi cua thuoc.
• Adding a wildcard symbol may retrieve word variants: tu sach v nang ((tai hoe) or (dai hai)). hieu ve cam xuc ((van hanh) or (van anh)) vi cua thuoc*.