Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
lieu tinh » trieu tinh, diep tinh, bien tinh
trang cua » tranh cua, tang cua, trung cua
doi lieu » duoc lieu, doi chieu, du lieu
cua tong » cua cong, cua dong, cua nong
cong tac » cong ty
tran cao » tran chau, trang cho, tranh cac
toan cao » toan ban, toan tap

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: doi lieu tinh - hanh trang cua tong ((cong san) OR (cong tac)) ((tran cao) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi lieu tinh - hanh trang cua tong ((cong san) OR (cong tac)) ((tran cao) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: doi lieu tinh - hanh trang cua tong ((cong san) OR (cong tac)) ((tran cao) or (toan cao))*.