Perhaps you should try some spelling variations:
thanh dong » thanh duong, thanh cong, nhanh dong
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh dong » anh dong, ha dong
trong van » trong cac
san dung » van dung, dan dung, tan dung
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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 - ((hanh dong) or (thanh dong)) san dung trong van ((toan cau) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh dong) OR (thanh dong)) san dung trong van ((toan cau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((hanh dong) or (thanh dong)) san dung trong van ((toan cau) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh dong) or (thanh dong)) san dung trong van ((toan cau) OR (toan tap))*.