Perhaps you should try some spelling variations:
thuat nhung » thuat chung, thuat chuong, thuat dung
hanh trinh » canh tranh, hanh chinh
chieu xanh » chieu sach, chieu sang, chieu tinh
thuat hung » thuat dung, thuat ung, thuat xung
hieu xanh » hieu manh, hieu nganh, dieu hanh
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 ((hieu xanh) or (chieu xanh)) - hanh trinh ((thuat nhung) OR (thuat hung)) cong tan tran chau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - hanh trinh ((thuat nhung) OR (thuat hung)) cong tan tran chau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (chieu xanh)) - hanh trinh ((thuat nhung) OR (thuat hung)) cong tan tran chau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (chieu xanh)) - hanh trinh ((thuat nhung) OR (thuat hung)) cong tan tran chau*.