Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
mai khoi » mai khoa, tai khoa, dai khoa
cac khoi » cac thoi, cac khoan, cach thoi
hanh hoi » hanh thoi, hanh noi, hanh hoa
ban hanh » ban hang
dua ban » dia ban, cua ban, qua ban
cuu tre » cua tre, cau treo
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ca dua » cay dua, ca cua, ca da
ve ca » ve cac, ve cai, ve 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 sach ky nang ((mai khoi) or (cac khoi)). hieu ve ca dua ban hanh hoi ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((mai khoi) OR (cac khoi)). hieu ve ca dua ban hanh hoi ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ((mai khoi) or (cac khoi)). hieu ve ca dua ban hanh hoi ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((mai khoi) or (cac khoi)). hieu ve ca dua ban hanh hoi ((cuu tre) OR (cau tren))*.