Perhaps you should try some spelling variations:
vuc nang » vu nang, chuc nang, van nang
van hanh » van thanh, ban hanh, van anh
cuc nang » chuc nang, cuu nang, cua nang
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
xuc van » duc van, luc van, vuc van
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ma hoi » mai hoi, xa hoi, ma hoa
vi su » va su, ve su, oi su
ki su » ky su

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 ((vuc nang) OR (cuc nang)) ma hoi. hieu va cham xuc van hanh ((vi su) or (ki su)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((vuc nang) OR (cuc nang)) ma hoi. hieu va cham xuc van hanh ((vi su) OR (ki su)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((vuc nang) OR (cuc nang)) ma hoi. hieu va cham xuc van hanh ((vi su) or (ki su)) viet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((vuc nang) OR (cuc nang)) ma hoi. hieu va cham xuc van hanh ((vi su) or (ki su)) viet*.