Perhaps you should try some spelling variations:
manh trung » manh tung, thanh trung, manh hung
hanh trung » thanh trung, hanh trang, danh trung
thong cong » trong cong, tong cong, thong thong
kien sach » dien sach, vien bach, kien mac
cua thong » cua thuong, cua khong, cua tong
hoc kien » hoc hien, hoc vien, hoa kien
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc kien sach - ((hanh trung) OR (manh trung)) cua thong cong san ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc kien sach - ((hanh trung) OR (manh trung)) cua thong cong san ((toan cao) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc kien sach - ((hanh trung) OR (manh trung)) cua thong cong san ((toan cao) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: hoc kien sach - ((hanh trung) OR (manh trung)) cua thong cong san ((toan cao) or (van ban))*.