Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh loi » thanh hoa, thanh hai, thanh lap
cach cua » mach cua, cac cua, cach dua
sach ky » sac ky, sach ty, sach kem
hieu ve » hieu va, hieu van
ve cach » va cach, ve cac, ve canh
cua tre » cua te, cuu tre, cua triet
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ky) or (sach y)) nang x hoi. hieu ve cach cua ban thanh loi ((cua tre) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sach y)) nang x hoi. hieu ve cach cua ban thanh loi ((cua tre) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ky) or (sach y)) nang x hoi. hieu ve cach cua ban thanh loi ((cua tre) or (cua tu))*.