Perhaps you should try some spelling variations:
thien van » thi van
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
cua tre » cua te, cuu tre, cua triet
van lam » van nam
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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

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