Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
van cau » van dau, van hau, van chat
qua ban » cua ban, qua quan
vai cuu » vai cua
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, me hoi, va hoi

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 ly nang ((((ma hoi) or (xa hoi))) or (ma hoa)). hieu van cau qua ban thanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang ((((ma hoi) OR (xa hoi))) OR (ma hoa)). hieu van cau qua ban thanh vai cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ly nang ((((ma hoi) or (xa hoi))) or (ma hoa)). hieu van cau qua ban thanh vai cuu tre*.