Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
dung duong » dung dong, dong duong, dung dung
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
duong van » duong va, luong va, dang van
cua dung » cua dang, cua dong, qua dung
toan cao » toan tap
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 tranh cua dung duong van ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tranh cua dung duong van ((toan cao) OR (toan ban))*.