Perhaps you should try some spelling variations:
ve triet » va trien, su triet
phap luu » phap lua, phap luat, phap luan
cham luu » cham cuu, chat lua, cham lai
hieu va » hieu qua
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
van anh » van thanh, tuan anh, van minh
tu sach » thu sach, su sach, te sach
anh vi » hanh vi, anh va, anh ve
vi ve » va ve, gi ve, ve ve

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 xang xa hoi. ((hieu va) OR (lieu va)) ((cham luu) or (phap luu)) van anh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty xang xa hoi. ((hieu va) OR (lieu va)) ((cham luu) OR (phap luu)) van anh vi ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty xang xa hoi. ((hieu va) OR (lieu va)) ((cham luu) or (phap luu)) van anh vi ve triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ty xang xa hoi. ((hieu va) OR (lieu va)) ((cham luu) or (phap luu)) van anh vi ve triet*.