Perhaps you should try some spelling variations:
cao thuoc » cay thuoc, cua thuoc, nam thuoc
hieu vien » hieu hien, hieu viec, thieu nien
thuoc va » thuc va, thuoc ma, thuong va
vien cao » vien cac, vien dai, vien da
thu bang » thu hang, chu bang, thu trang
thu ban » thu hang
va dinh » van dinh, va kinh, va tinh
doi cua » dai cua, hoi cua
su sach » so sach, vu sach
di cua » dai cua, de cua, do cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((thu bang) or (thu ban)) xa hoi. hieu vien cao thuoc va dinh ((di cua) OR (doi cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thu bang) OR (thu ban)) xa hoi. hieu vien cao thuoc va dinh ((di cua) OR (doi cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((thu bang) or (thu ban)) xa hoi. hieu vien cao thuoc va dinh ((di cua) OR (doi cua)) triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((thu bang) or (thu ban)) xa hoi. hieu vien cao thuoc va dinh ((di cua) OR (doi cua)) triet*.