Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
dang xay » dang van, van xay
cua tre » cua te, cuu tre, cua triet
cam duc » cao duc, pham duc, nam duoc
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
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.

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky dang xay hoi. ((hieu ve) or (hieu qua)) ((cam duc) or (cam xuc)) manh hanh thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky dang xay hoi. ((hieu ve) OR (hieu qua)) ((cam duc) OR (cam xuc)) manh hanh thai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky dang xay hoi. ((hieu ve) or (hieu qua)) ((cam duc) or (cam xuc)) manh hanh thai cua tre*.