Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
minh tuan » anh tuan
doc hieu » toc thieu, hoc thieu, hoc hien
song dan » song danh, song van, cong dan
dan phan » doan phan, dan chan, van phan
da nang » cam nang, kha nang, cao nang
ki nang » ky nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((minh tuan) or (hanh trinh)) ((da nang) or (ki nang)) song dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((minh tuan) OR (hanh trinh)) ((da nang) OR (ki nang)) song dan phan tu.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((minh tuan) or (hanh trinh)) ((da nang) or (ki nang)) song dan phan tu*.