Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
van duong » van dong, van phong, hai duong
van dung » van dong, xay dung, tin dung
tan toan » tan tran, van toan, dan 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 - hanh trinh ((van dung) or (van duong)) cong ((tan toan) OR (tap toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh ((van dung) OR (van duong)) cong ((tan toan) OR (tap toan)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh ((van dung) or (van duong)) cong ((tan toan) OR (tap toan)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh ((van dung) or (van duong)) cong ((tan toan) OR (tap toan)) ban*.