Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
anh xquang » anh quang, anh quan, anh xuan
xquang vat » quang va, quang van, xquang ma
hien xanh » hien hanh, chieu xanh, hien khanh
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
vat dung » van dung, va dung, viet dung
vang van » dang van, tang van, lang van

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 (hien nhanh)) - anh xquang vat dung cong vang van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - anh xquang vat dung cong vang van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (hien nhanh)) - anh xquang vat dung cong vang van ban*.