Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trinh luan » trinh luat, trinh quan, trinh han
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
cong tan » cong tac, cong san, cong thanh
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh ((trinh luan) or (tinh chat)) hang cong tan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((trinh luan) OR (tinh chat)) hang cong tan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trinh luan) or (tinh chat)) hang cong tan ((toan cau) or (toan ban))*.