Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam duc » cao duc, pham duc, nam duoc
su sai » su tai, su hai, su dai
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: su sai ky lang xa hoi. ((hieu ve) or (hieu va)) ((cam duc) OR (cam xuc)) ban hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky lang xa hoi. ((hieu ve) OR (hieu va)) ((cam duc) OR (cam xuc)) ban hanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sai ky lang xa hoi. ((hieu ve) or (hieu va)) ((cam duc) OR (cam xuc)) ban hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: su sai ky lang xa hoi. ((hieu ve) or (hieu va)) ((cam duc) OR (cam xuc)) ban hanh thai cua tre*.