Perhaps you should try some spelling variations:
chat nuoc » nhat nuoc, khat nuoc, thoat nuoc
cua thuoc » nha thuoc, cay thuoc, cua nuoc
va trinh » van trinh, va tinh, lap trinh
trinh vi » trinh va, trinh ve, trinh viet
te sach » toc sach
hieu va » hieu qua
ty ang » ty hang, ty anh
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty ang) OR (ty xang)) xa hoi. ((lieu va) OR (hieu va)) chat nuoc va trinh vi cua thuoc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty ang) OR (ty xang)) xa hoi. ((lieu va) or (hieu va)) chat nuoc va trinh vi cua thuoc~".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty ang) OR (ty xang)) xa hoi. ((lieu va) or (hieu va)) chat nuoc va trinh vi cua thuoc*.