Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
sach tai » sach bai, sach tham, sach dao
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
tu sach » thu sach, su sach, te sach
lang xa » dang xay, lang van
lang ha » long ha
va cao » va cac, va co, va dao
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 tai ((lang xa) OR (lang ha)) hoi. hieu ((va cao) or (va cham)) tuc va hanh lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tai ((lang xa) OR (lang ha)) hoi. hieu ((va cao) OR (va cham)) tuc va hanh lai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tai ((lang xa) OR (lang ha)) hoi. hieu ((va cao) or (va cham)) tuc va hanh lai su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach tai ((lang xa) OR (lang ha)) hoi. hieu ((va cao) or (va cham)) tuc va hanh lai su triet*.