Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
trung van » truong van, trong van, trung va
cau trung » cau truong, cac trung, cao trung
va triet » va thiet, va trien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
sang tao » hang tai
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
hieu ve » hieu van
nang ma » tang ma, sang ma, nang cao
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) OR (sang tao)) hoi. ((hieu ve) OR (hieu va)) cau trung van thanh vi va triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((nang ma) OR (sang tao)) hoi. ((hieu ve) OR (hieu va)) cau trung van thanh vi va triet*".