Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hien xanh » hien hanh, hien nhanh, chieu xanh
hieu lang » chieu sang, hieu quang, nhieu tang
trang cua » tranh cua, tang cua, trung cua
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
vang toan » van toan, dang toan, quang toan
cua dung » cua dang, cua dong, qua dung
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 ((hien xanh) or (hieu lang)) - hanh trang cua dung cong vang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hieu lang)) - hanh trang cua dung cong vang toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hieu lang)) - hanh trang cua dung cong vang toan ban*.