Perhaps you should try some spelling variations:
thanh tranh » thanh thanh, thanh tran, thanh trang
tranh chap » tranh cua, trinh chat
chap thong » chap thuong, phap thong, chap phong
thong cong » trong cong, tong cong, thong thong
hoc chinh » hoan chinh, hoc sinh, hoc kinh
cong tap » cuong tap, cong tac, cong tan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chinh) or (do dinh)) sach - thanh tranh chap thong cong tap ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chinh) OR (do dinh)) sach - thanh tranh chap thong cong tap ((toan cau) OR (toan ban))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chinh) or (do dinh)) sach - thanh tranh chap thong cong tap ((toan cau) OR (toan ban))*".