Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
sach thi » sach tai, sach thieu, sach tham
cham tuc » nham thuc, pham thuc, tham thuc
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, lai chau, thai cua
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay, lang van
ve cham » va cham, ve chat, vu cham
tuc va » thuc va, truc va, tuc xa

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 thi) OR (sach thu)) lang xa hoi. hieu ve cham tuc va hanh ((hai cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thi) OR (sach thu)) lang xa hoi. hieu ve cham tuc va hanh ((hai cua) OR (lai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thi) OR (sach thu)) lang xa hoi. hieu ve cham tuc va hanh ((hai cua) or (lai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach thi) OR (sach thu)) lang xa hoi. hieu ve cham tuc va hanh ((hai cua) or (lai cua)) triet*.