Perhaps you should try some spelling variations:
chinh thuat » chinh phat, chien thuat
chieu xanh » chieu sach, chieu sang, chieu tinh
chinh thuc » chinh phuc, hinh thuc, trinh thuc
doc chieu » doc hieu, doi chieu, toc thieu
tran chau » tranh chap, tran huu
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu xanh - hanh ((chinh thuat) OR (chinh thuc)) nhung ((cong tan) or (cong trinh)) tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu xanh - hanh ((chinh thuat) OR (chinh thuc)) nhung ((cong tan) OR (cong trinh)) tran chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc chieu xanh - hanh ((chinh thuat) OR (chinh thuc)) nhung ((cong tan) or (cong trinh)) tran chau".
• Adding a wildcard symbol may retrieve word variants: doc chieu xanh - hanh ((chinh thuat) OR (chinh thuc)) nhung ((cong tan) or (cong trinh)) tran chau*.