Perhaps you should try some spelling variations:
sau chan » cau chan, mau chan, san chang
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
te sach » toc sach
dai hoi » dai hoc, dai hai, dai moi
lai hoi » lai hoa, lai roi, mai hoi
ky dang » ky nang, ky danh
vu cao » cu cao, va cao
vi cua » vai cua, di cua
cua te » cua tu
xu va » xu van, tu va, su va

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 dang ((lai hoi) or (dai hoi)). hieu ((sau chan) or (vu cao)) xu va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ((lai hoi) OR (dai hoi)). hieu ((sau chan) OR (vu cao)) xu va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ((lai hoi) or (dai hoi)). hieu ((sau chan) or (vu cao)) xu va hanh vi cua te*.