Perhaps you should try some spelling variations:
nhung doi » nhung don, nhung loi, nhung noi
thien cac » hien cac, thien cau, thieu cac
nhung gi » nhung bi, nhung bai
quen van » quyen van, que van, huyen van
hien cau » khien cau, thien cau, hien cac
doi quan » moi quan, do quan, noi quan
quan van » luan van, quan va, quan luan
gi quen » si quyen
cau luc » cau truc, cau phuc
cac luc » coc luc, cac nuoc, cac cuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( nhung gi quen van. biet the hien cau luc ) or ( nhung doi quan van. biet the thien cac luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( nhung gi quen van. biet the hien cau luc ) OR ( nhung doi quan van. biet the thien cac luc )).
• Adding a wildcard symbol may retrieve word variants: (( nhung gi quen van. biet the hien cau luc ) or ( nhung doi quan van. biet the thien cac luc ))*.