Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
sach tren » sach tien, sach tranh
phan song » phan cong, phan hong, phan xuong
tren nuoc » trong nuoc, tren nguoi, thon nuoc
nuoc sach » nguoi sach, hoc sach, cuoc cach
sach khoa » bach khoa, sach nha, anh khoa
khoa phau » hoa phan, khoa kham, khoa than
hoach am » hoach xay, hoach dat, hoach san
hanh co » anh co, danh co, hanh mo
su sach » so sach, vu 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 am thuc hanh co phan song ) or ( su sach tren nuoc sach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach am thuc hanh co phan song ) OR ( su sach tren nuoc sach khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach am thuc hanh co phan song ) or ( su sach tren nuoc sach khoa phau thong ))*.