Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
thanh vi » hanh vi, thanh va, thanh ve
ty nang » ky nang, ty xang, ty hang
van lam » van nam
lam duc » lam duoc, pham duc, nam duoc
duc gia » quoc gia
cuu tre » cua tre, cau tren, cau treo
vi cuu » vi luu, vinh cuu
x hoi » xa hoi, o hoi, 5 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) OR (toc sach)) ty nang ((x hoi) or (x ho)). thien van lam duc gia thanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty nang ((x hoi) OR (x ho)). thien van lam duc gia thanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty nang ((x hoi) or (x ho)). thien van lam duc gia thanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ty nang ((x hoi) or (x ho)). thien van lam duc gia thanh vi cuu tre*.