Perhaps you should try some spelling variations:
phan xuong » phan cong
thuc hang » thuc hanh, thu hang, phuc hang
hang khoa » dung khoa
khoa phan » hoa phan, khoa than, khoa phau
thu lanh » thu canh, thi lanh, thu anh
dao thuc » dan thuc, dao tuc, do thuc
thuc cac » thuc cach, tuc cac, phuc cac
cac khoa » cac khoan, cac khoi, dac khoa
tu sach » thu sach, su sach, te sach
sach va » sach xa, sach ha, sach dao
khoa he » hoa he, khoa hoc, khong he

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu lanh dao thuc hang khoa phan xuong ) or ( tu sach va thuc cac khoa he (thong or trong) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu lanh dao thuc hang khoa phan xuong ) OR ( tu sach va thuc cac khoa he (thong OR trong) )).
• Adding a wildcard symbol may retrieve word variants: (( thu lanh dao thuc hang khoa phan xuong ) or ( tu sach va thuc cac khoa he (thong or trong) ))*.