Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tong gian » tong giao, trong giang, khong gian
tong giam » tong giao, dong giam, thong giao
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
toan cau » 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 - hanh ((tong gian) OR (tong giam)) trong cong hach toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((tong gian) OR (tong giam)) trong cong hach toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((tong gian) OR (tong giam)) trong cong hach toan cau*.