Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
cua tre » cua te, cuu tre, cua triet
nang xa » lang xa, nang ma, mang xa
duc ban » duc tan, duc van, dua ban
ke cau » ket cau
vi cua » vai cua, di cua
te dan » te danh, tre dan, ke dan
dan ky » van ky
ve cau » va cau, ve cac, le cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te dan ky ((nang xa) OR (nang x)) hoi. hieu ((ve cau) or (ke cau)) duc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te dan ky ((nang xa) OR (nang x)) hoi. hieu ((ve cau) OR (ke cau)) duc ban thanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te dan ky ((nang xa) OR (nang x)) hoi. hieu ((ve cau) or (ke cau)) duc ban thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te dan ky ((nang xa) OR (nang x)) hoi. hieu ((ve cau) or (ke cau)) duc ban thanh vi cua tre*.