Perhaps you should try some spelling variations:
tranh luat » trinh luat, tranh luan, tranh cua
trinh luan » trinh luat, trinh quan, trinh han
tieu xanh » tieu danh, chieu xanh, dieu hanh
duong van » luong va, dang van, trong van
duong va » dung va, luong va, dong 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: theo tieu xanh - canh ((tranh luat) or (trinh luan)) anh ((duong van) OR (duong va)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - canh ((tranh luat) OR (trinh luan)) anh ((duong van) OR (duong va)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - canh ((tranh luat) or (trinh luan)) anh ((duong van) OR (duong va)) toan cau".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - canh ((tranh luat) or (trinh luan)) anh ((duong van) OR (duong va)) toan cau*.