Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sanh)) ky dang xa hoi. ((hieu van) OR (hieu va)) cam xuc va thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ky dang xa hoi. ((hieu van) OR (hieu va)) cam xuc va thanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) ky dang xa hoi. ((hieu van) OR (hieu va)) cam xuc va thanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ky dang xa hoi. ((hieu van) OR (hieu va)) cam xuc va thanh ve cua tre*.