Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
gian truyen » gian huyen, phan truyen
hiv phuong » hieu phuong, chin phuong, hien phuong
trinh gian » trinh giang, trinh giao, trinh giai
cong hiv » chong hiv, among hiv, cong hieu
tu sach » thu sach, su sach, tu cach
te sach » toc sach
thong » trong

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 phuong trinh gian truyen thong~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) thanh cong hiv phuong trinh gian truyen thong".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) thanh cong hiv phuong trinh gian truyen thong*.