Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chinh van » chinh ban, chinh can, chinh ngan
theo chu » theo chieu, cho chu, chao chu
chu tinh » chau tinh, chua tinh, cuu tinh
chinh va » chinh ta, chinh tai, hanh va
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: theo chu tinh - hanh ((chinh van) OR (chinh va)) nhung cong san toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu tinh - hanh ((chinh van) OR (chinh va)) nhung cong san toan cau".
• Adding a wildcard symbol may retrieve word variants: theo chu tinh - hanh ((chinh van) OR (chinh va)) nhung cong san toan cau*.