Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
hanh lam » hanh kem, hanh va, dinh lam
cham duc » pham duc, cham soc, pham duy
su sach » so sach
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
hang ma » hang va, hang ca, tang ma
ty hang » ly hang, ty xang, thi hang
vu sach » vu bach, vu khach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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