Perhaps you should try some spelling variations:
lty hang » ly hang, ly hanh, le hang
hieu cao » chieu cao, hieu cac, hieu ca
su sach » so sach, vu sach
ty hang » ly hang, ty xang, thi hang
cua tre » cua te, cuu tre, cua triet
co hoi » co hoc, co loi
luc va » tuc va, loc va
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ty hang) or (lty hang)) co hoi. hieu cao chat ((luc va) or (duc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty hang) OR (lty hang)) co hoi. hieu cao chat ((luc va) OR (duc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ((ty hang) or (lty hang)) co hoi. hieu cao chat ((luc va) or (duc va)) hanh vi cua tre*.