Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
thanh tung » thanh cong
chau tinh » cuu tinh, ha tinh, cua tinh
cap trong » cay trong, ca trong, cad trong
tung cap » trung cap, cung cap, thong cap
cong san » cong tac
san van » tan van, luan van, tran van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu tinh) OR (chau tinh)) - thanh tung cap trong cong san van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu tinh) OR (chau tinh)) - thanh tung cap trong cong san van ban".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu tinh) OR (chau tinh)) - thanh tung cap trong cong san van ban*.