Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
hanh hai » thanh hai, hang hai, hanh tai
te sach » toc sach
cuc ban » cua ban, cac ban, cuu ban
cua tre » cua te, cuu tre, cua triet
cam cuc » cam xuc, cham cuu, pham cuc
hieu va » lieu va, hieu qua
tay hoi » tay ho, tao hoi, tay thai
xay hoi » xa hoi, cay phoi, gay thoi
y dang » ky dang, 2 dang, _ dang
va cam » va cham, va cac, va cao

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

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