Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nham thuc » nhan thuc, nam thuc, nham thu
sach vay » sach va, sach hay, sach nay
van hanh » van thanh, ban hanh, van anh
va hanh » va thanh, va danh, ban hanh
ve nham » ve nha, ve cham
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
sach 2 » sach y
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: su ((sach vay) or (sach 2)) nang xa hoi. hieu ve nham thuc ((va hanh) OR (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach vay) OR (sach 2)) nang xa hoi. hieu ve nham thuc ((va hanh) OR (van hanh)) vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach vay) or (sach 2)) nang xa hoi. hieu ve nham thuc ((va hanh) OR (van hanh)) vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach vay) or (sach 2)) nang xa hoi. hieu ve nham thuc ((va hanh) OR (van hanh)) vi cua triet*.