Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
hanh hai » thanh hai, hang hai, hanh tai
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cua triet, dua tren
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
xuc ban » duc ban, cuc ban, quoc ban
van cam » van nam, van lam, van cau
xay hoi » xa hoi, tay hoi, cay phoi
ky dang » ky nang, ky danh
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky dang xay hoi. hieu van cam xuc ban ((hanh hai) or (nhanh hai)) ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky dang xay hoi. hieu van cam xuc ban ((hanh hai) OR (nhanh hai)) ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky dang xay hoi. hieu van cam xuc ban ((hanh hai) or (nhanh hai)) ((cua tre) OR (cuu tre))*".