Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
tuong van » truong van, trong van, thong van
duong van » duong va, luong va, dang van
sinh cua » manh cua, dinh cuu, sinh va
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) or (chieu xanh)) - hanh sinh cua nhung ((tuong van) OR (duong van)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - hanh sinh cua nhung ((tuong van) OR (duong van)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - hanh sinh cua nhung ((tuong van) OR (duong van)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - hanh sinh cua nhung ((tuong van) OR (duong van)) toan cau*.