Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
cham duc » pham duc, cham soc, pham duy
cuu tre » cua tre, cau tren, cau treo
lai cuu » lai cua, lai chau, lai cuoc
va hanh » van hanh, va thanh, va danh
nang xa » lang xa, nang ma, mang xa
va cham » va chat, va tham
hieu va » lieu va, hieu qua
sac ky » cac ky

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 ((sac ky) OR (sai ky)) ((nang xa) OR (nang x)) hoi. hieu va cham duc va hanh lai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (sai ky)) ((nang xa) OR (nang x)) hoi. hieu va cham duc va hanh lai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (sai ky)) ((nang xa) OR (nang x)) hoi. hieu va cham duc va hanh lai cuu tre*.