Perhaps you should try some spelling variations:
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh tai » thanh hai, thanh toan, doanh tai
suc danh » suc manh, suc canh, sach danh
sach ky » sac ky, sach ty, sach kem
tai cuu » tai cuc, tai buu, tai cua
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa
ve cai » va cai, ve tai, ve cau

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 ky) OR (sach y)) nang ma hoi. hieu ((ve cai) or (ve cac)) suc danh thanh tai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sach y)) nang ma hoi. hieu ((ve cai) OR (ve cac)) suc danh thanh tai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sach y)) nang ma hoi. hieu ((ve cai) or (ve cac)) suc danh thanh tai cuu tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sach y)) nang ma hoi. hieu ((ve cai) or (ve cac)) suc danh thanh tai cuu tre*.