Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
hanh di » hanh vi, hanh de, hang di
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
y nang » ky nang, ly nang, v nang
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, de cua
cua te » cua tu

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 xa hoi. ((hieu ve) OR (hieu va)) cham ((xuc va) or (luc va)) hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang xa hoi. ((hieu ve) OR (hieu va)) cham ((xuc va) OR (luc va)) hanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang xa hoi. ((hieu ve) OR (hieu va)) cham ((xuc va) or (luc va)) hanh di cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang xa hoi. ((hieu ve) OR (hieu va)) cham ((xuc va) or (luc va)) hanh di cua te*.