Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
van hanh » van thanh, ban hanh, van anh
hanh tri » thanh tri, hanh tai, hanh trinh
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
cac luc » cau luc, coc luc, cac cuoc
sach 2 » sach y
2 nang » v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach 2 nang ma hoa. hieu va ((cac luc) OR (cac nuoc)) van hanh tri cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach 2 nang ma hoa. hieu va ((cac luc) OR (cac nuoc)) van hanh tri cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach 2 nang ma hoa. hieu va ((cac luc) OR (cac nuoc)) van hanh tri cua triet*.