Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong dong » thong duong, thuong dong, thong cong
hoc thieu » toc thieu, hoc hien
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
dong von » dung von, dong co, dong hoc
von toan » van toan, mon toan, von doanh
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 - hanh ((trinh cua) OR (tinh cua)) thong dong von toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((trinh cua) OR (tinh cua)) thong dong von toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trinh cua) OR (tinh cua)) thong dong von toan cao*.