Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
dang xay » dang van, van xay
hieu van » hieu va, thien van, hieu ve
hanh hai » thanh hai, hang hai, hanh tai
su sach » so sach, vu sach
cau xuc » cam xuc, cau luc, cau truc
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet

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