Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
vat danh » va danh, van danh, luat danh
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach
ky lang » ky dang, ky tang, tay lang
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
danh vi » hanh vi, dinh vi, danh di
vi va » vi van, vai va, vu va

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) or (tu sach)) ((ky lang) or (ky nang)) xa hoi. hieu va tham thuc vat danh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (tu sach)) ((ky lang) OR (ky nang)) xa hoi. hieu va tham thuc vat danh vi va triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (tu sach)) ((ky lang) or (ky nang)) xa hoi. hieu va tham thuc vat danh vi va triet*.