Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
lanh chung » doanh chung, manh hung, luan chung
chung chuc » chung chuan, chuong chua, chung cu
hieu tinh » lieu tinh, kieu tinh, hieu binh
van tuan » van quan, van ban, anh tuan
van tan » van ban, van tai, van thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu tinh) or (chieu tinh)) - lanh chung chuc nang song ((van tan) or (van tuan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu tinh) OR (chieu tinh)) - lanh chung chuc nang song ((van tan) OR (van tuan)) ban.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu tinh) or (chieu tinh)) - lanh chung chuc nang song ((van tan) or (van tuan)) ban*.