Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh tu » hanh tu, nhanh tu, thanh tung
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam luc » cau luc
y nang » ky nang, ly nang, v nang

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

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