Perhaps you should try some spelling variations:
sach tham » sach nha
tham dang » pham dang, tham lang, tham dinh
dang xay » dang van, van xay
van hanh » van thanh, ban hanh, van anh
hanh lai » hanh lam, hanh tai, thanh lap
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
xay hoi » xa hoi, tay hoi, cay phoi
va cham » va chat, va tham
tuc van » thuc van, truc van, tuc va
va cao » va cac, va co, va dao

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 dang xay hoi. hieu ((va cao) 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 dang xay hoi. hieu ((va cao) OR (va cham)) tuc van hanh lai su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach tham dang xay hoi. hieu ((va cao) or (va cham)) tuc van hanh lai su triet*.