Perhaps you should try some spelling variations:
sach tham » sach nha
su triet » su viet, su tien, ve triet
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
dang xay » dang van, van xay
va cham » va chat, va tham
tuc van » thuc van, truc van, tuc va
tu sach » thu sach, su sach, te sach
lang xa » lang ha, lang van

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