Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, phuong linh
khuong tinh » chuong trinh, phuong trinh, phuong binh
hanh trinh » canh tranh, hanh chinh
trinh luan » trinh luat, trinh quan, trinh han
luan chung » luan chinh
cua sinh » hoa sinh, va sinh
toan ban » van ban
va tinh » may tinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((cua sinh) or (va tinh)) - hanh trinh luan chung ((phuong tinh) or (khuong tinh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((cua sinh) OR (va tinh)) - hanh trinh luan chung ((phuong tinh) OR (khuong tinh)) toan ban.
• Adding a wildcard symbol may retrieve word variants: doi ((cua sinh) or (va tinh)) - hanh trinh luan chung ((phuong tinh) or (khuong tinh)) toan ban*.