Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
cac xuc » cam xuc, cac nuoc, chat xuc
cuu tre » cau tren, cau treo
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
may hoi » may thoi, tay hoi, mai hoi
cua tre » cua te, cua triet, dua tren
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sai ky)) mang may hoi. hieu va cac xuc van hanh vai ((cuu tre) OR (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sai ky)) mang may hoi. hieu va cac xuc van hanh vai ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) or (sai ky)) mang may hoi. hieu va cac xuc van hanh vai ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sai ky)) mang may hoi. hieu va cac xuc van hanh vai ((cuu tre) OR (cua tre))*.