Perhaps you should try some spelling variations:
lang chai » lang ha, lang cua, lang phi
dang xay » dang van, van xay
lanh hai » manh hai, thanh hai, lanh dao
su sach » so sach, vu sach
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
sach ky » sac ky, sach y, sach ty
xuc ban » duc ban, quoc ban, xuat ban
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
ve cam » ve cham, ve cac, va cam

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