Perhaps you should try some spelling variations:
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
ho chieu » theo chieu, doi chieu, mot chieu
cua dung » cua dang, cua dong, qua dung
toan cao » toan ban
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (hoc thieu)) xanh - hanh tranh cua dung duong van ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) xanh - hanh tranh cua dung duong van ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (hoc thieu)) xanh - hanh tranh cua dung duong van ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (hoc thieu)) xanh - hanh tranh cua dung duong van ((toan cao) OR (toan tap))*.