Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
cham luc » cham soc, nhan luc, cham cuu
luc van » luoc van, luu van, duc van
va cham » va chat, va tham
vu sach » vu bach, su sach, vu khach
nang ma » tang ma, nang cao, mang may
nang xa » nang x, lang xa, mang xa
sang ma » tang ma, sang tao, mang may
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (((nang ma) OR (sang ma)))) hoi. lieu va cham luc van hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) or (((nang ma) OR (sang ma)))) hoi. lieu va cham luc van hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (((nang ma) OR (sang ma)))) hoi. lieu va cham luc van hanh vi cua triet*.