Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh vua » trinh cua, trinh qua, trinh luat
chao chu » cho chu, cua chu, cao cho
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: ((chao chu) or (theo tieu)) xanh - hanh ((trinh vua) OR (trinh va)) nhung cong dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((chao chu) OR (theo tieu)) xanh - hanh ((trinh vua) OR (trinh va)) nhung cong dan toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((chao chu) or (theo tieu)) xanh - hanh ((trinh vua) OR (trinh va)) nhung cong dan toan tap".
• Adding a wildcard symbol may retrieve word variants: ((chao chu) or (theo tieu)) xanh - hanh ((trinh vua) OR (trinh va)) nhung cong dan toan tap*.