Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
van cam » van nam, van lam, van cau
danh vi » hanh vi, dinh vi, danh di
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
vi luu » vi lua
x hoi » xa hoi, o hoi, x ho
tru » truc

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 x hoi. hieu van cam ((xuc va) OR (luc va)) danh vi luu tru~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu van cam ((xuc va) OR (luc va)) danh vi luu tru".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu van cam ((xuc va) OR (luc va)) danh vi luu tru*.