Perhaps you should try some spelling variations:
doanh tri » doanh tai, doanh tren, dinh tri
gia doanh » gia thanh, gia dinh, giai doan
thu sach » thuat sach, thuoc sach, thu hoach
cua viet » ca viet, cua vat, cua dieu
hieu van » hieu va, thien van, lieu va
vang xa » lang xa, mang xa, ang xa
ly vang » ly hang, ly van, ly quang
van cam » van nam, van lam, van cau
cam luc » cam xuc, cau luc
luc gia » luoc gia, duc gia, quoc gia
tu sach » su sach, te sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) ly vang xa hoi. hieu van cam luc gia doanh tri ((cua viet) OR (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ly vang xa hoi. hieu van cam luc gia doanh tri ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (tu sach)) ly vang xa hoi. hieu van cam luc gia doanh tri ((cua viet) OR (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) ly vang xa hoi. hieu van cam luc gia doanh tri ((cua viet) OR (hoa viet))*.