Perhaps you should try some spelling variations:
pham sach » pham anh, nam sach, pham hanh
lang tien » bang tien, lang bien, dang tien
luan dieu » luan tieu, lan dieu, luan hieu
pho sach » khoa sach, khoe sach, pho trach
tieu cua » thieu cua, bieu cua, hieu cua
dieu cua » dieu tra
dan luan » doanh luan, dung luan, tang luan
pho gian » pho giao, cho giang, ho gia
tiep cua » tiep can, tap cua, tiep va
qua tiep » qua tieu, cua tiep, qua dieu
tien thu » tieu thu, kien thuc, trien thi
san luan » tang luan, hang luan, quan luan
cap qua » cau qua, cac qua, cay qua

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

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