Perhaps you should try some spelling variations:
cau triet » cau trieu, su triet, cua triet
nam thuoc » nam thuc, nam thu, nha thuoc
bieu cua » hieu cua, ben cua, dien cua
dieu cua » dieu tra
thuoc va » thuc va, thuoc ma, thuong va
va thanh » gia thanh, ban thanh, va tinh
thanh va » thanh van, hanh va, thanh ha
cau treo » cau theo, cau tren, cau trieu
nang o » nang co, nang ho, nang ro
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san
o hoi » co hoi, o hoc, o hai

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 o hoi. ((bieu cua) or (dieu cua)) nam thuoc va thanh va ((cau treo) OR (cau triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang o hoi. ((bieu cua) OR (dieu cua)) nam thuoc va thanh va ((cau treo) OR (cau triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang o hoi. ((bieu cua) or (dieu cua)) nam thuoc va thanh va ((cau treo) OR (cau triet))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang o hoi. ((bieu cua) or (dieu cua)) nam thuoc va thanh va ((cau treo) OR (cau triet))*.