Perhaps you should try some spelling variations:
thanh tranh » thanh thanh, thanh tran, thanh trang
hoan chinh » hanh chinh, hoa hinh
tranh chap » tranh cua, trinh chat
chap thong » chap thuong, phap thong, chap phong
thong cong » trong cong, tong cong, thong thong
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoan chinh) or (do dinh)) sach - thanh tranh chap thong cong tap toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoan chinh) OR (do dinh)) sach - thanh tranh chap thong cong tap toan tap*.