Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
tuong cua » truong cua, huong cua, thong cua
hoa sinh » cho sinh
tung cua » trung cua, dung cua, tang cua
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: ho ((chieu sach) or (hoa sinh)) - manh ((tung cua) OR (tuong cua)) nhung cong thanh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hoa sinh)) - manh ((tung cua) OR (tuong cua)) nhung cong thanh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (hoa sinh)) - manh ((tung cua) OR (tuong cua)) nhung cong thanh toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hoa sinh)) - manh ((tung cua) OR (tuong cua)) nhung cong thanh toan ban*.