Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, danh va, doanh van
sach thu » sach thue, sach thieu, sach tham
nang doc » nang luc
thuc va » thuc dan, thuc day
vai cua » dai cua, hai cua, lai cua
sach tu » cach tu, sach ty, sach uu
doc hoi » duoc hoi, hoc hoi, doc hai
hieu va » lieu va, hieu qua
va am » va lam, va cam

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

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