Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, cau trieu
thanh lai » thanh hai, thanh lap, thanh loi
van thanh » ban thanh, van tuan
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
cao hoi » co hoi, cao hoc, tao hoi
hieu va » lieu va, hieu qua
cau duc » cao duc, cau luc, chu duc
duc van » duc va, duc tan, duc manh
y nang » ky nang, ly nang, v nang
va cau » van cau, va cac, va dau

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) OR (thu sach)) y nang ((cao hoi) or (cau hoi)). hieu va cau duc van thanh lai chau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang ((cao hoi) OR (cau hoi)). hieu va cau duc van thanh lai chau triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) y nang ((cao hoi) or (cau hoi)). hieu va cau duc van thanh lai chau triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) y nang ((cao hoi) or (cau hoi)). hieu va cau duc van thanh lai chau triet*.