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

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) OR (su tai)) ky dang xa hoi. ((hieu ve) or (hieu qua)) cam duc manh hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su tai)) ky dang xa hoi. ((hieu ve) OR (hieu qua)) cam duc manh hanh thai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sai) OR (su tai)) ky dang xa hoi. ((hieu ve) or (hieu qua)) cam duc manh hanh thai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sai) OR (su tai)) ky dang xa hoi. ((hieu ve) or (hieu qua)) cam duc manh hanh thai cua tre*.