Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
hanh trinh » canh tranh, hanh chinh
hoa chinh » hoan chinh, hoa hinh, hoc chinh
luan hoan » luan van
hoan nong » hoa nong, hoang long, hoang cong
ho chinh » hoc chinh, cho chinh, do chinh
nong san » cong san, dong san, nong dan
toan cau » toan cao, toan tap, toan tai
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 chinh) or (hoa chinh)) sach - hanh trinh luan hoan nong san ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chinh) OR (hoa chinh)) sach - hanh trinh luan hoan nong san ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chinh) or (hoa chinh)) sach - hanh trinh luan hoan nong san ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: ((ho chinh) or (hoa chinh)) sach - hanh trinh luan hoan nong san ((toan cau) OR (toan ban))*.