Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
hanh thai » hinh thai, hanh tai, anh thai
so sanh » do sanh
duc van » duc va, duc tan, duc manh
xuc van » luc van, vuc van, xuc ban
sanh ly » sinh ly, doanh ly, khanh ly
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
nang o » nang co, nang ho, nang ro
o hai » co hai, so hai, o lai

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: so sanh ly nang o hai. hieu ve cam ((xuc van) OR (duc van)) ((hanh thai) OR (nhanh thai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh ly nang o hai. hieu ve cam ((xuc van) or (duc van)) ((hanh thai) OR (nhanh thai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sanh ly nang o hai. hieu ve cam ((xuc van) or (duc van)) ((hanh thai) OR (nhanh thai)) cua tre*.