Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nhan duc » nhan duoc, nhan luc, phan duc
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ca » hieu cac, hieu cua, hieu xa
hieu va » lieu va, hieu qua
duc van » duc va, duc tan, duc manh
van anh » van thanh, tuan anh, van minh
y nang » ky nang, ly nang, v nang
anh vi » hanh vi, anh va, anh ve
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 y nang xa hoi. ((hieu ca) OR (hieu va)) nhan duc van anh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((hieu ca) OR (hieu va)) nhan duc van anh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((hieu ca) OR (hieu va)) nhan duc van anh vi cua triet*.