Perhaps you should try some spelling variations:
phuong cang » phuong bang, phuong hoang, phuong giang
chieu sach » chinh sach, chiet tach, chieu sang
cang tinh » cong tinh, dang tinh, bang tinh
chi sang » chi lang, chieu sang, chi chang
manh cua » doanh cua
toan ban » van ban
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi sang) or (chieu sach)) - nhanh ((manh cua) OR (ban cua)) phuong cang tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi sang) OR (chieu sach)) - nhanh ((manh cua) OR (ban cua)) phuong cang tinh toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi sang) or (chieu sach)) - nhanh ((manh cua) OR (ban cua)) phuong cang tinh toan ban*".