Perhaps you should try some spelling variations:
van dung » van dong, xay dung, tin dung
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
su triet » su viet, su tien
ve triet » va trien
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((van dung) or (van ban)) xa hoi. hieu ve pham duc va thanh vi ((su triet) OR (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((van dung) OR (van ban)) xa hoi. hieu ve pham duc va thanh vi ((su triet) OR (ve triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((van dung) or (van ban)) xa hoi. hieu ve pham duc va thanh vi ((su triet) OR (ve triet))".
• Adding a wildcard symbol may retrieve word variants: vu sach ((van dung) or (van ban)) xa hoi. hieu ve pham duc va thanh vi ((su triet) OR (ve triet))*.