Perhaps you should try some spelling variations:
phan phoi » phan thi
su triet » su tien, ve triet
dan phan » doan phan, dan chan, van phan
truc dan » thuc dan, tuc dan, truc ban
so sach » so sanh, bo sach, co sach
ve chat » va chat, van chat
sach ky » sac ky, sach y, sach ty
ve chim » va chim, ve cham, ve chinh
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
su viet » so viet
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky tang ma hoi. hieu ((ve chim) or (ve chat)) truc dan phan phoi ((su triet) OR (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky tang ma hoi. hieu ((ve chim) OR (ve chat)) truc dan phan phoi ((su triet) OR (su viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky tang ma hoi. hieu ((ve chim) or (ve chat)) truc dan phan phoi ((su triet) OR (su viet))".
• Adding a wildcard symbol may retrieve word variants: so sach ky tang ma hoi. hieu ((ve chim) or (ve chat)) truc dan phan phoi ((su triet) OR (su viet))*.