Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
khong cong » thong cong, khong cang, chong cong
hoc thieu » toc thieu, hoc hien
trinh hoa » trinh han
trinh do » trinh ky
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan tap » toan 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 - canh ((trinh hoa) OR (trinh do)) khong cong tan toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((trinh hoa) OR (trinh do)) khong cong tan toan tap*".