Perhaps you should try some spelling variations:
dan thai » dang thai, dan thi, dan than
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, tu cach
te sach » toc sach
thi van » thi lan, thi hanh, thi nang
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau
x hoi » xa hoi, o hoi, x ho
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ky nang x hoi. ((thien van) OR (thi van)) hoc nuoc va dan thai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x hoi. ((thien van) OR (thi van)) hoc nuoc va dan thai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang x hoi. ((thien van) OR (thi van)) hoc nuoc va dan thai cua tre*".