Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
ban banh » ban hanh, ban anh, ban danh
hieu va » lieu va, hieu qua
cac cuc » cac cuoc, cac cua, cac nuoc
cuc ban » cua ban, cac ban, cuu ban
banh de » hanh de, banh keo, thanh de
cua tuc » cua duc, cua tu, luat tuc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
x hoi » o hoi, x ho, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((x hoi) or (xa hoi)). hieu va cac cuc ban banh de ((cua tuc) OR (cua thuoc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((x hoi) OR (xa hoi)). hieu va cac cuc ban banh de ((cua tuc) OR (cua thuoc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ((x hoi) or (xa hoi)). hieu va cac cuc ban banh de ((cua tuc) OR (cua thuoc))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((x hoi) or (xa hoi)). hieu va cac cuc ban banh de ((cua tuc) OR (cua thuoc))*.