Perhaps you should try some spelling variations:
chat thien » phat trien, cai thien, phat hien
thanh lam » thanh lap, thanh nam, thanh tam
hanh lam » thanh lap, hanh kem, hanh va
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
ha hoi » hoa hoi, ha noi, xa hoi
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: su sach ky lang ha hoi. hieu ve cac duc va ((thanh lam) OR (hanh lam)) chat thien~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky lang ha hoi. hieu ve cac duc va ((thanh lam) OR (hanh lam)) chat thien".
• Adding a wildcard symbol may retrieve word variants: su sach ky lang ha hoi. hieu ve cac duc va ((thanh lam) OR (hanh lam)) chat thien*.