Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hung thang » cang thang, hung tran
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
thang cua » thong cua, hang cua, than cua
cua thong » cua thuong, cua khong, cua tong
tac toan » tam toan, hach toan, tich toan
tap toan » tap doan, tap quan, bai toan

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 - hung thang cua thong cong ((tac toan) OR (tap toan)) tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hung thang cua thong cong ((tac toan) OR (tap toan)) tap*".