Perhaps you should try some spelling variations:
vien dai » hien dai
dao minh » cao minh, van minh, duc minh
minh can » minh chanh, minh danh, minh tuan
can tren » van tren, ca tren, cau tren
tu sach » thu sach, su sach, te sach
vien da » hien dai
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
va dao » ca dao
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang x hoi. hieu ((ve cac) or (((vien dai) or (vien da)))) tu va dao minh can tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((ve cac) OR (((vien dai) OR (vien da)))) tu va dao minh can tren.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((ve cac) or (((vien dai) or (vien da)))) tu va dao minh can tren*.