Perhaps you should try some spelling variations:
chat cuu » chat huu, chat cua, cham cuu
te sach » toc sach
hieu va » lieu va, hieu qua
va chat » van chat, va phat, cao chat
va danh » va dinh, va dan, va hanh
y nang » ly nang, v nang, may nang
cuu va » cuu van, cuu ve
vi cua » vai cua
di cua » dai cua, doi cua, de 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: te sach ((y nang) OR (ky nang)) xa hoi. hieu va chat cuu va danh ((vi cua) OR (di cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ky nang)) xa hoi. hieu va chat cuu va danh ((vi cua) or (di cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ky nang)) xa hoi. hieu va chat cuu va danh ((vi cua) or (di cua)) tre*.