Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham giua » tham gia, nhat giua, cam gia
thanh lai » thanh hai, thanh lap, thanh loi
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoa » cao hoat, cao khoa, cau hoa
hieu ve » hieu va, hieu van
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet

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 ky nang cao hoa. hieu ve ((cham giua) or (pham duc)) ban thanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoa. hieu ve ((cham giua) OR (pham duc)) ban thanh lai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoa. hieu ve ((cham giua) or (pham duc)) ban thanh lai cua tre*.