Perhaps you should try some spelling variations:
thuoc sac » thuoc sach, thuoc dac, thuoc san
thuoc sai » thuoc tai, thuoc san, thuoc sach
nang lai » nang tai, mang lai, nang cai
hanh vai » hanh vi, hanh va, hanh tai
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
lai hoa » dai hoa, loai hoc
hieu ve » hieu va, hieu van
cua te » cua tu
luc va » duc va, tuc va, loc va
co luc » coc luc, co luy
ve co » vo co, va co, de co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sac) OR (thuoc sai)) ky nang lai hoa. hieu ve co luc va hanh vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sac) OR (thuoc sai)) ky nang lai hoa. hieu ve co luc va hanh vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sac) OR (thuoc sai)) ky nang lai hoa. hieu ve co luc va hanh vai ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sac) OR (thuoc sai)) ky nang lai hoa. hieu ve co luc va hanh vai ((cua tre) or (cua te))*.