Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cai
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va
cua te » cua tu

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 y nang x ho. hieu ((va cam) OR (va cao)) xuc va thanh dat ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x ho. hieu ((va cam) OR (va cao)) xuc va thanh dat ((cua triet) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x ho. hieu ((va cam) OR (va cao)) xuc va thanh dat ((cua triet) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x ho. hieu ((va cam) OR (va cao)) xuc va thanh dat ((cua triet) or (cua te))*.