Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nham thuc » nhan thuc, nam thuc, nham thu
vanh tai » hanh tai, anh tai, xanh tai
vanh dai » van dai, lanh dao, van dao
sach ky » sac ky, sach y, sach ty
van tai » von tai, van tuan
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
va nham » va cham, va tham, va nha
hieu va » lieu va, hieu qua
danh xa » danh ca, dinh xa, canh xa
ky danh » ky anh, ky dang

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 danh xa hoi. hieu va nham thuc va ((vanh dai) or (((vanh tai) OR (van tai)))) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky danh xa hoi. hieu va nham thuc va ((vanh dai) OR (((vanh tai) OR (van tai)))) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky danh xa hoi. hieu va nham thuc va ((vanh dai) or (((vanh tai) OR (van tai)))) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky danh xa hoi. hieu va nham thuc va ((vanh dai) or (((vanh tai) OR (van tai)))) cua triet*.