Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
cua triet » cua viet, su triet, va triet
hanh vai » hanh vi, hanh va, hanh tai
lo nang » ho nang, ly nang, loai nang
sach lo » sach dao, sach doi, sach hoi
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
ve cau » va cau, le cau, ve cai
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
ke cau » ket cau
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach lo nang x hoi. hieu ((((ve cau) OR (ke cau))) or (ve cac)) luc va hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach lo nang x hoi. hieu ((((ve cau) OR (ke cau))) OR (ve cac)) luc va hanh vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach lo nang x hoi. hieu ((((ve cau) OR (ke cau))) or (ve cac)) luc va hanh vai cua triet*".