Perhaps you should try some spelling variations:
thanh ve » hanh ve, thanh va, thanh vien
thanh vi » hanh vi, thanh va, nhanh vi
te sach » toc sach
nam tuc » nam thuc, nam truc, nam tu
mai hoi » mai khoi, dai hoi, lai hoi
cuu tre » cua tre, cau tren, cau treo
va nam » van nam, ha nam, va nay
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
ma hoi » xa hoi, ma hoa, me hoi

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 y nang ((ma hoi) or (mai hoi)). lieu va nam tuc va ((thanh vi) OR (thanh ve)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ((ma hoi) OR (mai hoi)). lieu va nam tuc va ((thanh vi) OR (thanh ve)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((ma hoi) or (mai hoi)). lieu va nam tuc va ((thanh vi) OR (thanh ve)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((ma hoi) or (mai hoi)). lieu va nam tuc va ((thanh vi) OR (thanh ve)) cuu tre*.