Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, pham thu
nham thuc » nhan thuc, nam thuc, nham thu
ban nhanh » ban hanh, ban thanh, ban nhan
nhanh ha » thanh hoa, thanh hai, khanh hoa
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
ha su » hay su, hoa su, nha su

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 nang ma hoi. hieu va ((pham thuc) OR (nham thuc)) ban nhanh ha su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ma hoi. hieu va ((pham thuc) OR (nham thuc)) ban nhanh ha su triet".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ma hoi. hieu va ((pham thuc) OR (nham thuc)) ban nhanh ha su triet*.