Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, hanh trinh, canh tinh
duong cong » dung cong, luong cong, duong trong
hoc thieu » toc thieu, hoc hien
trinh van » trinh han, trinh quan, trinh toan
van duong » van dong, van dung, van phong
cong lang » cong vang, cong luong, cong quang
than cao » thai cao, than cap, than sao
toan cao » toan ban, toan tap

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 - canh trinh van duong cong lang ((than cao) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh trinh van duong cong lang ((than cao) OR (toan cao))*".