Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
chieu xanh » chieu sach, chieu sang, chieu tinh
cua thuong » cua truong, cua phuong, ca thuong
hieu manh » hieu nganh, dieu hanh, hien hanh
cua thong » cua khong, cua tong, suat thong
thong tac » thong cac, tuong tac, thong tai
tac van » tac vang, cac van, tac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (chieu xanh)) - hanh trang ((cua thong) OR (cua thuong)) thong tac van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu xanh)) - hanh trang ((cua thong) OR (cua thuong)) thong tac van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu xanh)) - hanh trang ((cua thong) OR (cua thuong)) thong tac van ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu xanh)) - hanh trang ((cua thong) OR (cua thuong)) thong tac van ban*.