Perhaps you should try some spelling variations:
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
duc van » duc tan, duc manh, duc phan
cua tre » cua te, cuu tre, cua triet
xu hoi » lu hoi, vu hoi, xu voi
ve cac » va cac, vien cac
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: te sach ty hang ((xu hoi) or (xa hoi)). hieu ve cac ((duc van) or (duc va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty hang ((xu hoi) OR (xa hoi)). hieu ve cac ((duc van) OR (duc va)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty hang ((xu hoi) or (xa hoi)). hieu ve cac ((duc van) or (duc va)) hanh vi cua tre*.