Perhaps you should try some spelling variations:
phuong cong » phuong dong, phong cong, phung cong
chieu sach » chinh sach, chieu sang, chieu xanh
nhanh mang » nhanh lang, hanh mang, nhanh quang
mang doan » hang doanh, quang doan, trang doan
cong tinh » cong trinh, cong vinh, long tinh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) OR (chiet tach)) - nhanh mang doan phuong cong tinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chiet tach)) - nhanh mang doan phuong cong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chiet tach)) - nhanh mang doan phuong cong tinh toan cau*.