Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
khien tinh » thien tinh, khien thich, bien tinh
hoc khien » hoc hien, hoc nghien, hoc thieu
doanh cua » doanh luan
dung cong » dung trong
manh cua » ban cua
dan toan » van toan, dan than, manh toan
toan tap » toan 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 - hanh ((manh cua) or (doanh cua)) ((nhung cong) or (dung cong)) dan toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc khien tinh - hanh ((manh cua) OR (doanh cua)) ((nhung cong) OR (dung cong)) dan toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc khien tinh - hanh ((manh cua) or (doanh cua)) ((nhung cong) or (dung cong)) dan toan tap*.