Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » hanh chinh
thong long » thang long, thong cong, thong dong
hoc thieu » toc thieu, hoc hien
han thong » han thuong, hang thong, nhan thong
long tinh » cong tinh, trong tinh, luong tin
toan ban » van ban

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) or (canh tranh)) han thong long tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh trinh) OR (canh tranh)) han thong long tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh trinh) or (canh tranh)) han thong long tinh toan ban*.