Perhaps you should try some spelling variations:
thanh trung » thanh tung
kieu tinh » lieu tinh, trieu tinh, diep tinh
chau tinh » cuu tinh, ha tinh, cua tinh
trung dap » trung cap, trung dai, trung dam
dap nhung » vap nhung, va nhung, dap ung
cong ban » cong bang, cong tan, cong dan
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((kieu tinh) or (chau tinh)) - thanh trung dap nhung ((cong ban) OR (cong san)) nhu cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((kieu tinh) OR (chau tinh)) - thanh trung dap nhung ((cong ban) OR (cong san)) nhu cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((kieu tinh) or (chau tinh)) - thanh trung dap nhung ((cong ban) OR (cong san)) nhu cau".
• Adding a wildcard symbol may retrieve word variants: doi ((kieu tinh) or (chau tinh)) - thanh trung dap nhung ((cong ban) OR (cong san)) nhu cau*.