Perhaps you should try some spelling variations:
tran thanh » ban thanh, van thanh, quan thanh
tran tranh » trang trinh, trong tranh, tan tran
hien xanh » hien hanh, hien nhanh, chieu xanh
thanh cao » thanh ca, thanh cac, thanh thao
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van

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 ((tran tranh) or (tran thanh)) nhung ((cong van) OR (song van)) thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh ((tran tranh) OR (tran thanh)) nhung ((cong van) OR (song van)) thanh cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh ((tran tranh) or (tran thanh)) nhung ((cong van) OR (song van)) thanh cao*".