Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
dua tren » dung tren
sach ky » sach y, sach ty, sach kem
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
sac ky » cac ky, sai ky
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang x hoi. hieu va cam xuc va hanh dai ((dua tren) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang x hoi. hieu va cam xuc va hanh dai ((dua tren) or (cua te))~".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) OR (sac ky)) nang x hoi. hieu va cam xuc va hanh dai ((dua tren) or (cua te))*.