Perhaps you should try some spelling variations:
thong trinh » thong tinh, chuong trinh, phuong trinh
quan truyen » qua truyen, phan truyen, quan tren
gian truyen » gian huyen, phan truyen
hiv thong » hinh thong, he thong, gia thong
cong hiv » chong hiv, among hiv, cong hieu
tu sach » thu sach, su sach, tu cach
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) thanh cong hiv thong trinh ((quan truyen) OR (gian truyen)) thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thanh cong hiv thong trinh ((quan truyen) OR (gian truyen)) thong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) thanh cong hiv thong trinh ((quan truyen) OR (gian truyen)) thong".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) thanh cong hiv thong trinh ((quan truyen) OR (gian truyen)) thong*.