Perhaps you should try some spelling variations:
hoach tri » hoach hoi, hoach thu
thuc dung » thuoc dung, thuy dung, tuc dung
dung khoa » dung cho
pho thong » he thong
sach pham » sach tham, sach phat, sach phap
pham thuc » phap thuc, pham chuc, nham thuc
tri thuc » tri tue
khoa pho » khoa phu, khoa khoa, khoa phau
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan, thuc day
va hoc » van hoc

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 dung khoa pho thong ) or ( su sach pham thuc va hoc pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach tri thuc dung khoa pho thong ) OR ( su sach pham thuc va hoc pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach tri thuc dung khoa pho thong ) or ( su sach pham thuc va hoc pho thong ))*.