Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thanh hai » thanh phan, thanh hoa, thanh san
lam duoc » nam duoc, luat duoc, lam thuoc
su sach » so sach, vu sach
lam duc » pham duc, nam duoc, lam dung
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang xa hoi. thi van ((lam duc) OR (lam duoc)) ban ((thanh hai) or (thanh toan)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. thi van ((lam duc) OR (lam duoc)) ban ((thanh hai) OR (thanh toan)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang xa hoi. thi van ((lam duc) OR (lam duoc)) ban ((thanh hai) or (thanh toan)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. thi van ((lam duc) OR (lam duoc)) ban ((thanh hai) or (thanh toan)) cua tre*.