Perhaps you should try some spelling variations:
chau triet » cau triet, cua triet, chau tuyet
cau trieu » cac trieu, cau triet, chua trieu
ban phan » ban phap, van phan, ban than
phan lap » phan dau
bo sach » co sach, hoc sach
cao hoc » co hoc, cho hoc, chat hoc
duc ban » duc tan, duc van, dua ban
y nang » ky nang, ly nang, v nang
va cai » va bai, va dai, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: bo sach y nang cao hoc. lieu ((va cai) or (va cac)) duc ban phan lap ((chau triet) or (cau trieu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: bo sach y nang cao hoc. lieu ((va cai) OR (va cac)) duc ban phan lap ((chau triet) OR (cau trieu)).
• Adding a wildcard symbol may retrieve word variants: bo sach y nang cao hoc. lieu ((va cai) or (va cac)) duc ban phan lap ((chau triet) or (cau trieu))*.