Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh dao » lanh dao, thanh dat, thanh dam
sang ma » tang ma, nang ma, sang tao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
ky sang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » truc va, tuc xa, duc va
dao ve » bao ve, dap ve, dau ve

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

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