Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
luan ung » luan hung, luan chung, luan luong
luon ung » luoc ung, luon suong, luong dung
dan toan » van toan, dan than, 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 tranh ((luan ung) OR (luon ung)) huong dan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh tranh ((luan ung) OR (luon ung)) huong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh ((luan ung) OR (luon ung)) huong dan toan cau*.