Perhaps you should try some spelling variations:
khien tinh » thien tinh, khien thich, bien tinh
nhung cong » dung cong, thong cong, hang cong
hoc khien » hoc hien, hoc nghien, hoc thieu
truong ca » truong cao, trong ca, truong dai
truong va » truong dai, truong cao, truong dao
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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 - manh ((truong ca) OR (truong va)) nhung cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc khien tinh - manh ((truong ca) OR (truong va)) nhung cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - manh ((truong ca) OR (truong va)) nhung cong dan toan ban*.