Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
ty nang » ky nang, ty hang, ly nang
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
va cam » va cham, va cac, va cao
cam tu » cam thu, nam tu, dam tu
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ty nang) OR (ty xang)) xa hoi. hieu va cam tu va hanh di cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) OR (ty xang)) xa hoi. hieu va cam tu va hanh di cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) OR (ty xang)) xa hoi. hieu va cam tu va hanh di cau tren*.