Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
dang cong » dung cong
cong san » cong tac
than cap » thanh lap, thanh cac, than cua
khan cap » khan ap, khoan cam, phan cac
sinh va » sinh vat, tinh va, dinh van
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - hanh sinh va dang cong san ((than cap) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - hanh sinh va dang cong san ((than cap) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh sinh va dang cong san ((than cap) or (khan cap))*.