Perhaps you should try some spelling variations:
thong trinh » thong tinh, chuong trinh, phuong trinh
quan truyen » qua truyen, gian truyen, phan truyen
sach thanh » sach tranh, sach tham, danh thanh
huong tran » huong dan, quang tran, chuong trinh
cong hiv » chong hiv, among hiv, cong hieu
tu sach » thu sach, su sach, te 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 thanh cong hiv ((thong trinh) or (huong tran)) quan truyen thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thanh cong hiv ((thong trinh) OR (huong tran)) quan truyen thong.
• Adding a wildcard symbol may retrieve word variants: tu sach thanh cong hiv ((thong trinh) or (huong tran)) quan truyen thong*.