Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trung » thanh trung, hanh trang, manh trung
hoc chieu » hoc thieu, ho chieu, hoc hien
trung vat » trung va, trung van, trong vat
vat dung » van dung, va dung, viet dung
cong dan » cong san, cong dong, cong tac
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu xanh - hanh trung vat dung ((((cong dan) OR (cong tan))) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh trung vat dung ((((cong dan) OR (cong tan))) OR (huong dan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh trung vat dung ((((cong dan) OR (cong tan))) or (huong dan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh trung vat dung ((((cong dan) OR (cong tan))) or (huong dan)) toan cau*.