Perhaps you should try some spelling variations:
khap thong » phap thong, khau thong, khac thuong
sach tien » sach thieu
tien thuc » trien thuc, kien thuc, bien thuc
khoa khap » khoa kham, khoa khac, kho khan
sach tren » sach tranh
cach thoi » cac thoi, cach thuc, cach noi
pho thong » he thong
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
tren phu » tren phan, tren thuc, bien phu
phu cach » phap cach, thuc cach, thu canh
thoi pho » hoc pho, doi pho, hoi tho
te sach » toc sach
tu sach » thu sach, su sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tien thuc anh khoa khap thong ) or ( tu sach tren phu cach thoi pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tien thuc anh khoa khap thong ) OR ( tu sach tren phu cach thoi pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tien thuc anh khoa khap thong ) or ( tu sach tren phu cach thoi pho thong ))*.