Perhaps you should try some spelling variations:
truong toan » truong ton, truong tan, truong thanh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trong toan » trong tan, trong hoan, trong tuan
chua xang » chua nang, chuc nang, chu bang
trinh thi » trinh tai, dinh thi, trinh tu
thi nhung » thi nang, thi hong, thi huong
chu xanh » chu manh, chieu xanh, chuc danh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chu xanh) OR (chua xang)) - hanh trinh thi nhung cong ((truong toan) or (trong toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chu xanh) OR (chua xang)) - hanh trinh thi nhung cong ((truong toan) OR (trong toan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chu xanh) OR (chua xang)) - hanh trinh thi nhung cong ((truong toan) or (trong toan)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chu xanh) OR (chua xang)) - hanh trinh thi nhung cong ((truong toan) or (trong toan)) cau*.