Perhaps you should try some spelling variations:
thanh trung » thanh tung
khien tinh » thien tinh, khien thich, bien tinh
hoc khien » hoc hien, hoc nghien, hoc thieu
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong tang » cong thang, cong lang, cong vang
thanh bai » thanh hai, thanh tai, thanh oai
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc khien tinh - thanh trung cua nhung ((cong tan) or (cong tang)) thanh bai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - thanh trung cua nhung ((cong tan) OR (cong tang)) thanh bai.
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - thanh trung cua nhung ((cong tan) or (cong tang)) thanh bai*.