Perhaps you should try some spelling variations:
sanh trong » sinh trong, anh trong, hanh trong
trong thuc » trong thu, thuong thuc, trong thuat
khau thong » khau thuong, khap thong, khau tong
hanh trinh » canh tranh, hanh chinh
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa khau » khoa kham, khoa phau, khoa chau
trinh thi » trinh tai, dinh thi, trinh tu
pho thong » he thong
thu sanh » thu canh, thu san, thu sinh
cac khoi » cac thoi, cac khoan, cach thoi
khoi pho » khoi tho, khoi khoa, hoc pho
tu hanh » du hanh, lu hanh, thi hanh
thi cac » thi cuc, tai cac, thi tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu sanh trong thuc hanh khoa khau thong ) or ( tu hanh trinh thi cac khoi pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu sanh trong thuc hanh khoa khau thong ) OR ( tu hanh trinh thi cac khoi pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu sanh trong thuc hanh khoa khau thong ) or ( tu hanh trinh thi cac khoi pho thong ))*.