Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, anh thai
duc manh » suc manh, duc anh, duc minh
hanh tai » thanh tai, hang tai, han tai
cua tre » cua te, cuu tre, cua triet
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
sai ky » sac ky
su sai » su tai, su hai, su dai

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: su sai ky dang xa hoi. ((hieu ve) OR (hieu qua)) cam duc manh ((hanh thai) OR (hanh tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky dang xa hoi. ((hieu ve) or (hieu qua)) cam duc manh ((hanh thai) OR (hanh tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xa hoi. ((hieu ve) or (hieu qua)) cam duc manh ((hanh thai) OR (hanh tai)) cua tre*.