Perhaps you should try some spelling variations:
tien nang » thien nang, trien nang, tin nang
sach tien » sach tren, sach thieu
nam duoc » nam thuoc, da duoc, dat duoc
hieu van » hieu va, thien van, lieu va
thanh ve » hanh ve, thanh va, thanh vien
lam duoc » luat duoc, lam thuoc, tao duoc
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
nang xa » nang x, lang xa, nang ma

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 tien nang xa hoi. hieu van ((lam duoc) OR (nam duoc)) va thanh ve ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tien nang xa hoi. hieu van ((lam duoc) OR (nam duoc)) va thanh ve ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach tien nang xa hoi. hieu van ((lam duoc) OR (nam duoc)) va thanh ve ((cua tre) or (cuu tre))*".