Perhaps you should try some spelling variations:
thien van » thi van
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
cau duc » cao duc, cau luc, chu duc
ba benh » va benh, bo benh, bach benh
doi cua » dai cua, hoi cua
y nang » ky nang, ly nang, v nang
duc ba » duc ban, duc bao, duc va
vi cua » vai cua
di cua » dai cua, de cua, do cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. thien van cau duc ba benh ((vi cua) OR (((di cua) OR (doi cua)))) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang xa hoi. thien van cau duc ba benh ((vi cua) or (((di cua) OR (doi cua)))) tre~".
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. thien van cau duc ba benh ((vi cua) or (((di cua) OR (doi cua)))) tre*.