Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
mai khoi » mai khoa, tai khoa, cac khoi
hanh hai » nhanh hai, hang hai, hanh tai
te sach » toc sach
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cao duc » dao duc, cao suc, giao duc
ve cao » va cao, ve bao, ve cac
cua te » cua tu

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 ((ma hoa) or (mai khoi)). hieu ve cao duc va ((hanh hai) or (thanh hai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((ma hoa) OR (mai khoi)). hieu ve cao duc va ((hanh hai) OR (thanh hai)) cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((ma hoa) or (mai khoi)). hieu ve cao duc va ((hanh hai) or (thanh hai)) cua te*.