Perhaps you should try some spelling variations:
trinh phuong » trinh duong, trinh dung, trinh cong
phuong cong » phuong dong, phong cong, phung cong
chiet tach » chieu sach
quan trinh » qua trinh, quan tinh, xuan trinh
doi chiet » doi chieu, doi chi, doi viet
anh quan » anh tuan, ban quan, anh nhan
cong tap » cuong tap, cong tac, cong tan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - anh quan trinh phuong cong tap ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chiet tach - anh quan trinh phuong cong tap ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - anh quan trinh phuong cong tap ((toan cau) OR (toan tap))*.