Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cau tren » cu tren, dau tren, ca tren
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vai cau » va cau, van cau, vai cac
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y nang xa hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang xa hoi. hieu ve cam ((xuc va) OR (duc va)) hanh vai cau tren.
• Adding a wildcard symbol may retrieve word variants: so sach y nang xa hoi. hieu ve cam ((xuc va) or (duc va)) hanh vai cau tren*.