Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
y nang » ly nang, v nang, may nang
tuc va » thuc va, truc va, tuc xa
vi cau » va cau, ve cau, di cau

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) or (ky nang)) xa hoi. lieu va cham tuc va hanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ky nang)) xa hoi. lieu va cham tuc va hanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ky nang)) xa hoi. lieu va cham tuc va hanh vi cau tren*.