Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
trung pham » trung phan, tung pham, trung phat
hieu cach » hieu cac, hieu ca, biet cach
pham hong » pham hoang, pham cong, pham thuong
hong cong » thong cong, hoang cong, chong cong
lan chinh » luan chinh, hanh chinh, hoan chinh
van chinh » va chinh, van thinh, hanh chinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu cach) or (chieu sach)) - thanh trung pham hong cong ((lan chinh) OR (van chinh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu cach) OR (chieu sach)) - thanh trung pham hong cong ((lan chinh) OR (van chinh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu cach) or (chieu sach)) - thanh trung pham hong cong ((lan chinh) OR (van chinh)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu cach) or (chieu sach)) - thanh trung pham hong cong ((lan chinh) OR (van chinh)) cau*.