Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
thu sach » tu sach, thuat sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
xuc van » duc van, luc van, vuc van
vu sach » vu bach, su sach, vu khach
mai hoi » mai khoi, dai hoi, lai hoi
ve cac » va cac, vien cac
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua
ve cam » ve cham, va cam, ve cai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (thu sach)) y nang mai hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh vi cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (thu sach)) y nang mai hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh vi cua thuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (thu sach)) y nang mai hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh vi cua thuoc".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (thu sach)) y nang mai hoi. hieu ((ve cam) OR (ve cac)) xuc van thanh vi cua thuoc*.