Perhaps you should try some spelling variations:
thieu bang » thien bang, thieu khang, thieu quang
su sach » so sach, vu sach
bang xa » lang xa, bang va, mang xa
dau tuc » dau tu, cau truc, dau nuoc
dao tuc » dao duc
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di 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 thieu bang xa hoi. lieu va ((dau tuc) OR (dao tuc)) va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thieu bang xa hoi. lieu va ((dau tuc) OR (dao tuc)) va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach thieu bang xa hoi. lieu va ((dau tuc) OR (dao tuc)) va hanh vi cua tre*.