Perhaps you should try some spelling variations:
phap thuc » phap thu, phap hoc, phap tu
doc sach » hoc sach, toc sach, nuoc sach
hanh van » thanh van, khanh van, hanh san
su triet » su viet, su tien, ve triet
sach ky » sac ky, sach y, sach ty
hieu vi » hieu voi, hieu va, hieu ve
vi phap » va phap, vi pham, vi phan
thuc va » thuc vat, thuc dan, thuc day
hanh va » hang va, hanh vi
ma hoi » mai hoi, xa hoi, me hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach ky nang ((ma hoi) or (ma hoa)). hieu vi phap thuc va ((hanh van) or (hanh va)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ky nang ((ma hoi) OR (ma hoa)). hieu vi phap thuc va ((hanh van) OR (hanh va)) su triet.
• Adding a wildcard symbol may retrieve word variants: doc sach ky nang ((ma hoi) or (ma hoa)). hieu vi phap thuc va ((hanh van) or (hanh va)) su triet*.