Perhaps you should try some spelling variations:
thiet tinh » thien tinh, thuyet tinh, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
ban thoai » ban thai, ban thoi, van thoai
thoai cac » tai cac, thong cac, tho cac
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tinh - canh tranh cua nhung cong ban thoai cac~.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tinh - canh tranh cua nhung cong ban thoai cac*.