Perhaps you should try some spelling variations:
luong thanh » muong thanh, truong thanh, dong thanh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
luong toan » truong toan, luong tai, luong tin
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh trinh cua nhung cong ((luong toan) OR (luong thanh)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh trinh cua nhung cong ((luong toan) OR (luong thanh)) cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh trinh cua nhung cong ((luong toan) OR (luong thanh)) cao*.