Perhaps you should try some spelling variations:
than thong » than thuong, toan thong, tran thong
hanh khoa » hang khoa, anh khoa, hanh hoa
pho thong » he thong
sinh hoat » sinh hoc, sinh vat
hoat than » hoa than, hoan thanh, hoai thanh
dao thuc » dan thuc, dao tuc, do thuc
khoa pho » khoa phu, khoa khoa, khoa phau
cac thai » cac thoi, ca thai, cac thi
thai hoc » dai hoc, bai hoc, hoi hoc
tu lanh » tu hanh, tu lenh, tu manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu lanh dao thuc hanh khoa pho thong ) or ( tu cac thai hoc sinh hoat than thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu lanh dao thuc hanh khoa pho thong ) OR ( tu cac thai hoc sinh hoat than thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu lanh dao thuc hanh khoa pho thong ) or ( tu cac thai hoc sinh hoat than thong ))*.