Perhaps you should try some spelling variations:
duy hoang » huy hoang, duc hoang, duy thong
nang sinh » dang sinh, nang kinh, khang sinh
cuu treo » cau treo, cuu tre, cu tren
sinh cuu » dinh cuu, sinh cua, sinh cau
ky hoang » huy hoang, ky nang, le hoang
hieu va » lieu va, hieu qua
lam luc » lao luc, lam duoc
va nang » van nang, da nang, cam nang
co sach » bo sach, cuon sach, hoc sach
so sach » so sanh, bo sach, hoc sach
va lam » van lam, va lap
luc va » duc va, tuc va, loc va

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) or (co sach)) ((ky hoang) OR (duy hoang)) van hoa. hieu va lam luc va nang sinh cuu treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ((ky hoang) OR (duy hoang)) van hoa. hieu va lam luc va nang sinh cuu treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (co sach)) ((ky hoang) OR (duy hoang)) van hoa. hieu va lam luc va nang sinh cuu treo".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (co sach)) ((ky hoang) OR (duy hoang)) van hoa. hieu va lam luc va nang sinh cuu treo*.