Perhaps you should try some spelling variations:
nghiem thuc » nghiem thuoc, nghiep thuc, nhiem thuc
phong thuoc » khong thuoc, phong thuc, phong tuc
thuc cong » thuoc cong, thu cong, chuc cong
co khanh » co thanh, o khanh, co hanh
thuoc ma » hoc ma, duoc ma
giai han » giai san, giai phap, giai phau
anh hoc » sinh hoc, benh hoc, hinh hoc
cong co » dong co, cong cu, cong so
tu anh » tu hanh, tu manh, thu anh
hoa va » hoa van, hoa vo, hoa vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu anh hoc tap, nghiem thuc cong co khanh phong thuoc ma ((hoa va) or (hoa xa)) giai han~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu anh hoc tap, nghiem thuc cong co khanh phong thuoc ma ((hoa va) OR (hoa xa)) giai han.
• Adding a wildcard symbol may retrieve word variants: tu anh hoc tap, nghiem thuc cong co khanh phong thuoc ma ((hoa va) or (hoa xa)) giai han*.