Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
thuc hoach » thu hoach, thuc hanh, chuc hach
sach tren » sach tien, sach tranh
tren thuc » trien thuc, tron thuc, trinh thuc
hoach hoa » hoach ha, hoach hoi, hoach toan
phan tong » phan trong, phan cong, han tong
thanh tri » thanh tra, thanh tai, chinh tri
bach khoa » anh khoa
khoa phau » khoa kham, khoa than, khoa thu
hoa phan » hoa dan, co phan
so thanh » son thanh, o thanh, su thanh
tri truc » tri thuc, thi truc, tri thuoc
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 tren thuc hoach hoa phan tong ) or ( so thanh tri truc bach khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tren thuc hoach hoa phan tong ) OR ( so thanh tri truc bach khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tren thuc hoach hoa phan tong ) or ( so thanh tri truc bach khoa phau thong ))*.