Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
cong manh » cong danh, duong manh, cong thanh
cau sach » cao sach, rau sach, khau sach
hau sach » khau sach, ham sach, rau sach
toan cao » toan tap
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: chao ((cau sach) or (hau sach)) - hanh trinh cua thong cong manh ((toan cao) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((cau sach) OR (hau sach)) - hanh trinh cua thong cong manh ((toan cao) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((cau sach) or (hau sach)) - hanh trinh cua thong cong manh ((toan cao) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: chao ((cau sach) or (hau sach)) - hanh trinh cua thong cong manh ((toan cao) OR (toan ban))*.