Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
thanh lap » thanh san, phan lap, thanh hai
lap chat » lam chat, luan chat, phap chat
va thanh » gia thanh, ban thanh, va tinh
hoa hoi » khoa hoi, hoa hoc, hoa doi
cac duc » cac du, cao duc, cac dac
qua cac » cua cac
su sach » so sach, vu sach
ky lang » ky nang, ky dang, ky tang
ha hoi » ha noi, xa hoi, va hoi

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) or (do sanh)) ky lang ((ha hoi) OR (hoa hoi)). hieu qua cac duc va thanh lap chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (do sanh)) ky lang ((ha hoi) OR (hoa hoi)). hieu qua cac duc va thanh lap chat triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (do sanh)) ky lang ((ha hoi) OR (hoa hoi)). hieu qua cac duc va thanh lap chat triet*".