Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
thanh lam » thanh lap, hanh lam, thanh nam
vien cac » vien bach, vien dai, vien da
lam chat » luan chat, cao chat, ly chat
sach thu » sach thue, sach thieu, sach tham
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, xach tay
tang xa » trang xa, tang ma, lang xa
ve cac » va cac
du va » dau va, tu va, su va

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 ty) or (sach thu)) tang xa hoi. hieu ((ve cac) OR (vien cac)) du va thanh lam chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach thu)) tang xa hoi. hieu ((ve cac) OR (vien cac)) du va thanh lam chat triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) or (sach thu)) tang xa hoi. hieu ((ve cac) OR (vien cac)) du va thanh lam chat triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach thu)) tang xa hoi. hieu ((ve cac) OR (vien cac)) du va thanh lam chat triet*.