Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
su sach » so sach, vu sach
van hau » van ha, van hai, van dau
tai cua » thai cua, tai cuc, tri cua
y nang » ly nang, v nang, may nang
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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 ((y nang) or (ky nang)) xa hoi. hieu van hau ((xuc va) OR (tuc va)) hanh tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (ky nang)) xa hoi. hieu van hau ((xuc va) OR (tuc va)) hanh tai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) or (ky nang)) xa hoi. hieu van hau ((xuc va) OR (tuc va)) hanh tai cua triet*".