Perhaps you should try some spelling variations:
hinh thai » sinh thai, tinh thai, dinh thi
nang khoa » hang khoa, dang khoa, nang hoa
cua triet » cua viet, su triet, va triet
khoa hoc » hoa hoc
hieu van » thien van, lieu va, hieu ve
ban hinh » bang hinh, ban chinh, ban hanh
thai cua » than cua, tai cuc, tri cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
xuc ban » duc ban, cuc ban, quoc ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang khoa hoc. ((hieu va) or (hieu van)) cam xuc ban hinh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang khoa hoc. ((hieu va) OR (hieu van)) cam xuc ban hinh thai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang khoa hoc. ((hieu va) or (hieu van)) cam xuc ban hinh thai cua triet*.