Perhaps you should try some spelling variations:
nhanh thang » nhanh thanh, nhanh quang, hanh trang
nhanh thai » nhanh thi, nhanh thanh, nhan tai
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
ky lang » ky nang, ky dang, ky tang
hai ky » thai ky, hoi ky, hai ly
xuc va » duc va, tuc va, luc va
su hai » su 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 hai ky lang xa hoi. ((hieu ve) or (hieu qua)) cam xuc va ((nhanh thai) OR (nhanh thang)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su hai ky lang xa hoi. ((hieu ve) OR (hieu qua)) cam xuc va ((nhanh thai) OR (nhanh thang)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su hai ky lang xa hoi. ((hieu ve) or (hieu qua)) cam xuc va ((nhanh thai) OR (nhanh thang)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su hai ky lang xa hoi. ((hieu ve) or (hieu qua)) cam xuc va ((nhanh thai) OR (nhanh thang)) cua tre*.