Perhaps you should try some spelling variations:
thiet tra » thi tra
sach luan » sach luyen, san luan
pham sach » pham anh, nam sach, pham hanh
van tien » toan tien, van hieu, van tuan
pho sach » khoa sach, khoe sach, pho trach
dieu tra » dieu tri, kiem tra, dieu cua
han dieu » nhan dieu, than dieu, lan dieu
sach han » sach tham, sach danh, sach nang
chua tri » chu tri, chua trieu, chua tivi
gian van » giang van, gian dan, gian lan
qua tiep » qua tieu, cua tiep, qua dieu
tiep cua » tiep can, dieu cua, tap cua
tien thu » tieu thu, kien thuc, trien thi
pho cam » pho tam, pho nam, kho cam
cua tri » cua toi, cua tai, cua tre
cac qua » cau qua, tac quan
pha cac » phan cac, phap cac, pha cau
thoi » thi, hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thoi gian van tien thu ) or ((((( pha cac qua tiep cua ) or ((( pho cam ((cua tri) OR (chua tri)) cua ) or ( pho cap ((cua tri) OR (chua tri)) cua ))))) or ((( pham sach han dieu tra ) or ( pho sach luan thiet tra ))))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thoi gian van tien thu ) OR ((((( pha cac qua tiep cua ) OR ((( pho cam ((cua tri) OR (chua tri)) cua ) OR ( pho cap ((cua tri) OR (chua tri)) cua ))))) OR ((( pham sach han dieu tra ) OR ( pho sach luan thiet tra ))))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( thoi gian van tien thu ) or ((((( pha cac qua tiep cua ) or ((( pho cam ((cua tri) OR (chua tri)) cua ) or ( pho cap ((cua tri) OR (chua tri)) cua ))))) or ((( pham sach han dieu tra ) or ( pho sach luan thiet tra ))))))*".