Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
doanh va » doan va, doanh tai, doanh cua
va doanh » van doanh, vay doanh, va danh
chat xuc » chat huu, chao xu, chat cua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, mang may
va cua » va chua, via cua, ca cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky ((nang ma) or (nang cao)) hoi. hieu ve ((chat xuc) OR (cam xuc)) va doanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky ((nang ma) OR (nang cao)) hoi. hieu ve ((chat xuc) OR (cam xuc)) va doanh va cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky ((nang ma) or (nang cao)) hoi. hieu ve ((chat xuc) OR (cam xuc)) va doanh va cua te*".