Perhaps you should try some spelling variations:
thanh duong » thanh huong, thanh cuong, thanh vuong
thanh dong » thanh cong, hanh dong, nhanh dong
hien sach » dien sach, kien sach, thien hach
tong cong » trong cong, cong cong, dung cong
cua tong » cua cong, cua dong, cua nong
cong san » cong tac
toan cau » toan cao, toan ban, toan tai
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: hoc hien sach - ((thanh dong) OR (thanh duong)) cua tong cong san ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sach - ((thanh dong) OR (thanh duong)) cua tong cong san ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien sach - ((thanh dong) OR (thanh duong)) cua tong cong san ((toan cau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien sach - ((thanh dong) OR (thanh duong)) cua tong cong san ((toan cau) or (toan tap))*.