Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach doi » sach moi, sach dao, sach bai
sach hoi » sach moi, cach thoi, hoach hoi
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cau duc » cao duc, cau luc, chu duc
hieu va » lieu va, hieu qua
hieu ve » hieu van
nang xa » nang x, lang xa, nang ma
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 doi) or (sach hoi)) nang xa hoi. ((hieu ve) or (hieu va)) cau duc va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach doi) OR (sach hoi)) nang xa hoi. ((hieu ve) OR (hieu va)) cau duc va danh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach doi) or (sach hoi)) nang xa hoi. ((hieu ve) or (hieu va)) cau duc va danh vi cua triet*.