Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » thong cong, hang cong, nhung don
hoc chieu » hoc thieu, ho chieu, hoc hien
dung cong » dung trong
trang va » tran van, hang va
than ban » thanh ban, toan ban, nhuan ban
than man » than ma, thanh san, tran manh

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 trang va ((nhung cong) OR (dung cong)) dan ((than ban) or (than man))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - hanh trang va ((nhung cong) OR (dung cong)) dan ((than ban) OR (than man)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu xanh - hanh trang va ((nhung cong) OR (dung cong)) dan ((than ban) or (than man))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - hanh trang va ((nhung cong) OR (dung cong)) dan ((than ban) or (than man))*.