Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
cac xuc » cam xuc, cac nuoc, chat xuc
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky danh » ky anh, ky dang
xuc va » duc va, tuc va, luc va
ve cac » va cac, vien cac

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

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