Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
duong manh » duong van
cong danh » cuong danh, cong dan, cong thanh
cua sinh » va sinh
hoa sinh » cho sinh
va tuong » va thuong, va thong, xa truong
toan cau » toan cao, toan ban, toan tap
tinh va » tich va, trinh van, trinh vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi ((cua sinh) OR (hoa sinh)) - nhanh tinh va tuong ((duong manh) or (cong danh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((cua sinh) OR (hoa sinh)) - nhanh tinh va tuong ((duong manh) OR (cong danh)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((cua sinh) OR (hoa sinh)) - nhanh tinh va tuong ((duong manh) or (cong danh)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoi ((cua sinh) OR (hoa sinh)) - nhanh tinh va tuong ((duong manh) or (cong danh)) toan cau*.