Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, ve cau
ve cai » va cai, ve cac, ve tai
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
cua te » cua tu
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 cam) or (ve cai))) or (va cam)) duc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((((ve cam) OR (ve cai))) OR (va cam)) duc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((((ve cam) or (ve cai))) or (va cam)) duc va hanh vi cua te*.