Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
hoc chieu » hoc thieu, ho chieu, hoc hien
tranh van » tran van, trinh van, thanh van
hang cong » dang cong, hang nong, bang cong
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 - canh tranh van ((hang cong) or (thong cong)) dan ((than ban) or (than man))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu xanh - canh tranh van ((hang cong) OR (thong cong)) dan ((than ban) OR (than man)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu xanh - canh tranh van ((hang cong) or (thong cong)) dan ((than ban) or (than man))*.