Perhaps you should try some spelling variations:
song trong » cong trong, sang trong, duong trong
dong trong » duong trong, dung trong, cong trong
hien xanh » hien hanh, hien nhanh, chieu xanh
tranh qua » tranh cua, thanh qua, trinh qua
dang toan » dang tran, dan toan, dung 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 tranh qua ((song trong) OR (dong trong)) dang toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - canh tranh qua ((song trong) OR (dong trong)) dang toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - canh tranh qua ((song trong) OR (dong trong)) dang toan cau*.