Perhaps you should try some spelling variations:
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
lanh hai » manh hai, thanh hai, lang chai
cay phoi » cap phoi, tay hoi, cay cho
hai cua » thai cua, dai cua, hoi cua
tu sach » thu sach, su sach, te sach
xay hoi » xa hoi, tay hoi, gay thoi
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va

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 tay lang ((xay hoi) OR (cay phoi)). hieu ve cam ((xuc va) or (duc va)) lanh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tay lang ((xay hoi) OR (cay phoi)). hieu ve cam ((xuc va) OR (duc va)) lanh hai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tay lang ((xay hoi) OR (cay phoi)). hieu ve cam ((xuc va) or (duc va)) lanh hai cua tre*".