Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
truong va » truong dai, truong cao, truong dao
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
vu sach » vu bach, vu khach
vai cua » dai cua, hai cua, lai cua
su sach » so sach
va cam » va cham, va cac, va cao
y nang » ky nang, ly nang, v nang

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 (vu sach)) y nang xa hoi. hieu va cam ((truc va) or (truong va)) hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu va cam ((truc va) OR (truong va)) hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (vu sach)) y nang xa hoi. hieu va cam ((truc va) or (truong va)) hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (vu sach)) y nang xa hoi. hieu va cam ((truc va) or (truong va)) hanh vai cua triet*.