Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
anh xquang » anh quang, anh quan, anh xuan
xquang vat » quang va, quang van, xquang ma
hien xanh » hien hanh, hien nhanh, chieu xanh
dung cong » dung trong
vat dung » van dung, va dung, viet dung
cong van » cong vang, cong san, song van
van van » tan van, san van, van vat

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