Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
xuc van » duc van, luc van, vuc van
cua tuc » cua duc, cua tu, cua thuoc
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
ve cam » va cam, ve cai, ve cau
vi cua » vai cua, di 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: tu sach y nang mai hoi. hieu ((((ve cam) OR (ve cac))) OR (ve cham)) xuc van hanh vi cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang mai hoi. hieu ((((ve cam) OR (ve cac))) or (ve cham)) xuc van hanh vi cua tuc~".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang mai hoi. hieu ((((ve cam) OR (ve cac))) or (ve cham)) xuc van hanh vi cua tuc*.