Perhaps you should try some spelling variations:
khanh tai » thanh tai, hanh tai, nhanh thai
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa khau » khoa kham, khoa phau, khoa chau
khau tong » khau thong, khau cong, khau thuong
sach thuc » cach thuc, sach thu, sach thue
vu khanh » vu thanh, van khanh, duy khanh
thuc phu » thuc pham, thuc thuc, thuc thi
khoan he » khoa he, khoan ke, khoan le
tu hanh » du hanh, lu hanh, thuc hanh
te sach » toc sach
phu cac » phuc cac, pha cac, phu can
thong » trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu khanh tai tu hanh khoa khau tong ) or ( te sach thuc phu cac khoan he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu khanh tai tu hanh khoa khau tong ) OR ( te sach thuc phu cac khoan he thong )).
• Adding a wildcard symbol may retrieve word variants: (( vu khanh tai tu hanh khoa khau tong ) or ( te sach thuc phu cac khoan he thong ))*.