Perhaps you should try some spelling variations:
cao thuoc » cua thuoc, nam thuoc, va thuoc
cay thuoc » cua thuoc, nam thuoc, va thuoc
tinh hai » tinh thai, tinh chat, trinh han
hai cua » thai cua, dai cua, hoi cua
va tinh » may tinh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cao thu » cao thi, cac thu, ca thu
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang xa hoi. lieu va ((cao thu) or (((cao thuoc) OR (cay thuoc)))) va tinh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. lieu va ((cao thu) OR (((cao thuoc) OR (cay thuoc)))) va tinh hai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. lieu va ((cao thu) or (((cao thuoc) OR (cay thuoc)))) va tinh hai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. lieu va ((cao thu) or (((cao thuoc) OR (cay thuoc)))) va tinh hai cua tre*.