Perhaps you should try some spelling variations:
thuong van » thong van, truong van, thuong va
chieu xanh » chieu sach, chieu sang, chieu tinh
hien xanh » hien hanh, hien nhanh, hien khanh
canh manh » lanh manh, canh tranh, cach mang
van hang » van khang, van hoang, van thang
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap
va hang » va nang, va lang, va hanh

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 (chieu xanh)) - canh manh ((va hang) or (van hang)) thuong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (chieu xanh)) - canh manh ((va hang) OR (van hang)) thuong van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) OR (chieu xanh)) - canh manh ((va hang) or (van hang)) thuong van toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) OR (chieu xanh)) - canh manh ((va hang) or (van hang)) thuong van toan cao*.