Perhaps you should try some spelling variations:
khau thong » khau thuong, khap thong, khau tong
phan thong » phan thuong, phan hong, phan tong
bach khoa » anh khoa
khoa khau » khoa kham, khoa phau, khoa chau
sach dao » lanh dao
tuc bach » truc bach, trac bach, tuc cac
hanh dao » lanh dao, thanh dat, thanh dam
bach hoa » bach ha, cach hoan, hoach hoa
hoa phan » hoa dan, co phan
te sach » toc sach
dao tuc » dao duc
du hanh » dieu hanh, duy khanh, luu hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach dao tuc bach khoa khau thong ) or ( du hanh dao tuc bach hoa phan thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach dao tuc bach khoa khau thong ) OR ( du hanh dao tuc bach hoa phan thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach dao tuc bach khoa khau thong ) or ( du hanh dao tuc bach hoa phan thong ))*.