Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan luc » nang luc
van anh » van thanh, tuan anh, van minh
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
va nhan » van nhan, ca nhan, va phan
hieu va » lieu va, hieu qua
cao hoi » cau hoi, co hoi, cao hoc
ty nang » ky nang, ty xang, ty hang
vi cua » vai cua, di cua

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 ty nang cao hoi. hieu va nhan luc ((van anh) or ((tuan OR quan) anh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang cao hoi. hieu va nhan luc ((van anh) OR ((tuan OR quan) anh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang cao hoi. hieu va nhan luc ((van anh) or ((tuan OR quan) anh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang cao hoi. hieu va nhan luc ((van anh) or ((tuan OR quan) anh)) vi cua triet*.