Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
hien nhanh » hien hanh, thien thanh, tien thanh
hien xanh » hien hanh, chieu xanh, hien khanh
trong vat » trong van, trong va, trong dat
van thanh » ban thanh, van tuan
vat dung » van dung, va dung, viet dung
van quan » van 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) OR (hien nhanh)) - thanh trong vat dung trong ((van quan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - thanh trong vat dung trong ((van quan) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (hien nhanh)) - thanh trong vat dung trong ((van quan) or (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (hien nhanh)) - thanh trong vat dung trong ((van quan) or (van thanh)) cau*.