Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
sach lo » sach dao, sach doi, sach hoi
ve nam » he nam, va nam, le nam
thu va » thuc va, thue va, tu va
thiet » thieu

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