Perhaps you should try some spelling variations:
hoai duc » hoa duoc, hong duc, ho duc
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
va hanh » van hanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
vi cua » vai cua, di cua

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 xa hoi. ((thien van) OR (thi van)) hoai duc ((va hanh) or (va thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. ((thien van) OR (thi van)) hoai duc ((va hanh) OR (va thanh)) vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. ((thien van) OR (thi van)) hoai duc ((va hanh) or (va thanh)) vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. ((thien van) OR (thi van)) hoai duc ((va hanh) or (va thanh)) vi cua tre*.