Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tran tuan » tran xuan, tran quang, tran thanh
bang cong » dang cong, bang song, hang cong
san trinh » dan trinh, san tinh, van trinh
trinh ban » trinh han, trinh san, trinh dan
doc hieu » toc thieu, hoc thieu, hoc hien
dung cua » dung luan
cong san » cong tac

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 - thanh ((((dung cua) or (dung cho))) or (tran tuan)) bang cong san trinh ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - thanh ((((dung cua) OR (dung cho))) OR (tran tuan)) bang cong san trinh ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh ((((dung cua) or (dung cho))) or (tran tuan)) bang cong san trinh ban*.