Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung quan » truong quan, trong quan, trung tuan
quan trong » gian trong
trong dang » truong dang, trong dan, trong dong
dang tac » sang tac, dong tac, dang bac
tac nhan » tao nhan, cac nhan, dac nhan
nhan va » nhan tai, nhan dan, nhan tao

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 (diep tinh)) - thanh trung quan trong dang tac nhan va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu tinh) OR (diep tinh)) - thanh trung quan trong dang tac nhan va*.