Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
quang dung » quang trung, ung dung, cuong dung
hien xanh » hien hanh, hien nhanh, chieu xanh
canh tinh » manh tinh, canh tranh, thanh tinh
hanh tinh » hanh trinh, thanh tinh, hanh tin
dung cong » dung trong
cong vang » cong lang, cong quang, cong ngang
vang toan » van toan, dang toan, quang toan
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 - ((((canh tinh) OR (nhanh tinh))) or (hanh tinh)) quang dung cong vang toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((((canh tinh) OR (nhanh tinh))) OR (hanh tinh)) quang dung cong vang toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((((canh tinh) OR (nhanh tinh))) or (hanh tinh)) quang dung cong vang toan cau*".