Perhaps you should try some spelling variations:
ve triet » va trien, su triet
sach ty » sach y, sach tu, sach thu
anh ghi » anh thi, anh nghe, anh gioi
duc van » duc va, duc tan, duc manh
cam duc » cam xuc, cao duc, pham duc
so sach » so sanh, bo sach, co sach
hieu va » lieu va
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
anh gi » danh gia, anh giao, anh gioi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty hang xa hoi. ((hieu va) or (hieu qua)) cam duc van ((anh gi) OR (anh ghi)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty hang xa hoi. ((hieu va) OR (hieu qua)) cam duc van ((anh gi) OR (anh ghi)) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty hang xa hoi. ((hieu va) or (hieu qua)) cam duc van ((anh gi) OR (anh ghi)) ve triet".
• Adding a wildcard symbol may retrieve word variants: so sach ty hang xa hoi. ((hieu va) or (hieu qua)) cam duc van ((anh gi) OR (anh ghi)) ve triet*.