Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
va thanh » gia thanh, ban thanh, va tinh
cham duc » pham duc, cham soc, pham duy
vu sach » vu bach, vu khach
lap cua » lai cua, tap cua, lam cua
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
ty tang » tay tang, ty xang, ty hang
su sach » so sach
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (su sach)) ty tang ((ma hoi) OR (ma hoa)). hieu vu cham duc va thanh lap cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ty tang ((ma hoi) OR (ma hoa)). hieu vu cham duc va thanh lap cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (su sach)) ty tang ((ma hoi) OR (ma hoa)). hieu vu cham duc va thanh lap cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (su sach)) ty tang ((ma hoi) OR (ma hoa)). hieu vu cham duc va thanh lap cua tre*.