Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
van chat » cao chat
chat xuc » chat huu, cam xuc, chao xu
van hanh » ban hanh, van anh, van ban
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
vi va » vi van, vai va, vu va

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 ma hoa. hieu van chat xuc ((van hanh) or (van thanh)) vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoa. hieu van chat xuc ((van hanh) OR (van thanh)) vi va triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoa. hieu van chat xuc ((van hanh) or (van thanh)) vi va triet*.