Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cham cuu » chat cua
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
hang ma » hang va, hang ca, tang ma
ty hang » ly hang, ty xang, thi hang
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 ty hang ma hoi. hieu ve ((cham cuu) or (cap cuu)) va ((thanh san) or (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty hang ma hoi. hieu ve ((cham cuu) OR (cap cuu)) va ((thanh san) OR (thanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty hang ma hoi. hieu ve ((cham cuu) or (cap cuu)) va ((thanh san) or (thanh tai)) cua tre*.