Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
luan anh » luan danh, tuan anh, lan anh
dau xuc » dau xac, dau xua, dau nuoc
vai cua » dai cua, hai cua, lai cua
van anh » van thanh, tuan anh, van minh
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang xa) or (nang ma)) hoi. hieu va dau xuc ((van anh) or (luan anh)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (nang ma)) hoi. hieu va dau xuc ((van anh) OR (luan anh)) vai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (nang ma)) hoi. hieu va dau xuc ((van anh) or (luan anh)) vai cua triet*.