Perhaps you should try some spelling variations:
doan thien » hoan thien, toan thiet
nhung cong » dung cong, thong cong, hang cong
doan thi » dan thi, doanh tai, hoang thi
chinh va » chinh ta, chinh tai, tinh va
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
hanh va » hang va, hanh vi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((doan thien) OR (doan thi)) thanh - hanh ((chinh va) OR (hanh va)) nhung cong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doan thien) or (doan thi)) thanh - hanh ((chinh va) OR (hanh va)) nhung cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((doan thien) or (doan thi)) thanh - hanh ((chinh va) OR (hanh va)) nhung cong dan toan cau*.