Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
hoc sach » hoc sinh, hoc anh
thi hanh » thi thanh
hanh ca » hanh cac, hanh cat, hanh cua
hoc cac » hoc cao
thuc va » thuc vat, thuc dan, thuc day
hieu va » lieu va, hieu qua
ca hoi » cau hoi, cua hoi, xa hoi
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (hoc cac)) thi hanh ca hoi. hieu va cam ((thuc va) or (tuc xa)) hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc cac)) thi hanh ca hoi. hieu va cam ((thuc va) OR (tuc xa)) hanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (hoc cac)) thi hanh ca hoi. hieu va cam ((thuc va) or (tuc xa)) hanh dai cua triet*.