Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sua cua » sua chua, qua cua, lua cua
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
cam luc » cam xuc, cau luc
vu sach » vu bach, su sach, vu khach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y ((nang xa) or (nang ma)) hoi. hieu ve cam luc ((va hanh) OR (va danh)) sua cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang xa) OR (nang ma)) hoi. hieu ve cam luc ((va hanh) OR (va danh)) sua cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang xa) or (nang ma)) hoi. hieu ve cam luc ((va hanh) OR (va danh)) sua cua triet".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang xa) or (nang ma)) hoi. hieu ve cam luc ((va hanh) OR (va danh)) sua cua triet*.