Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
te sach » toc sach
va hanh » van hanh, va thanh, va danh
vu cham » va cham, vu kham, tu cham
vu chao » vu cao, vu chat, vu cho
dai hoi » dai hoc, dai hai, dai moi
ky tang » ky nang, ky dang, kho tang
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) or (tu cac)) ky tang dai hoi. hieu ((vu chao) or (vu cham)) xu va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (tu cac)) ky tang dai hoi. hieu ((vu chao) OR (vu cham)) xu va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (tu cac)) ky tang dai hoi. hieu ((vu chao) or (vu cham)) xu va hanh vi cua te*.