Perhaps you should try some spelling variations:
thanh va » thanh van, thanh ha, thanh ve
tang dai » tang tai, tang dan, lang dai
te sach » toc sach
hanh va » hang va, hanh vi
vu chao » vu cao, vu cham, vu chat
hieu vu » hieu va, hieu ve, hieu su
dai hoi » dai hoc, dai hai, dai moi
ky tang » ky nang, ky dang, kho tang
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 xu va ((thanh va) OR (hanh va)) 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 xu va ((thanh va) OR (hanh va)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (tu cac)) ky tang dai hoi. hieu vu chao xu va ((thanh va) OR (hanh va)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (tu cac)) ky tang dai hoi. hieu vu chao xu va ((thanh va) OR (hanh va)) cua te*.