Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
anh xquang » anh quang, anh quan, anh xuan
xquang cua » quang cua, quan cua, quang cu
hien xanh » hien hanh, chieu xanh, hien khanh
cua nhung » va nhung
cong vang » cong lang, cong quang, cong ngang
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

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