Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
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 » hai cua, lai cua, bai cua
ve cau » ke cau, va cau, le cau
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va
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 (ve cac)) luc va hanh ((vai cua) OR (dai 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 (ve cac)) luc va hanh ((vai cua) OR (dai 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 (ve cac)) luc va hanh ((vai cua) OR (dai cua)) triet*".