Perhaps you should try some spelling variations:
tuong trong » thuong trong, truong trong, duong trong
hien nhanh » hien hanh, thien thanh, tien thanh
hien xanh » hien hanh, chieu xanh, hien khanh
trong van » trong cac
trang va » hang va
tran van » luan van
ban cau » bang cau, ban can, van cau

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)) - hanh ((trang va) OR (tran van)) tuong trong van ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (hien nhanh)) - hanh ((trang va) OR (tran van)) tuong trong van ban cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (hien nhanh)) - hanh ((trang va) OR (tran van)) tuong trong van ban cau*".