Perhaps you should try some spelling variations:
phan thong » phan thuong, phan hong, phan tong
sach trien » sach tien, sach tren, sach thieu
trien thuc » trien thuoc, tren thuc, trien thuat
hoach tri » hoach toi, hoach hoi, hoach thu
khoa phan » hoa phan, khoa than, khoa phau
khoan pho » khoan nhoi, khoan phai, khoan hoi
pho thong » he thong
tri thuc » tri tue
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
thuc cac » thuc cach, tuc cac, phuc cac
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: (( thu hoach tri thuc anh khoa phan thong ) or ( tu sach trien thuc cac khoan pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach tri thuc anh khoa phan thong ) OR ( tu sach trien thuc cac khoan pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach tri thuc anh khoa phan thong ) or ( tu sach trien thuc cac khoan pho thong ))*.