Perhaps you should try some spelling variations:
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh manh » hanh mang, hoang manh, thanh minh
lanh manh » lanh tranh, lan anh, van manh
chua nang » chuc nang, chua xang, cuu nang
duong van » duong va, luong va, dang van
kha nang » phap nang, ky nang, ki nang
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 - ((hanh manh) or (lanh manh)) ((chua nang) OR (kha nang)) duong van ban cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - ((hanh manh) OR (lanh manh)) ((chua nang) OR (kha nang)) duong van ban cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - ((hanh manh) or (lanh manh)) ((chua nang) OR (kha nang)) duong van ban cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - ((hanh manh) or (lanh manh)) ((chua nang) OR (kha nang)) duong van ban cau*.