Perhaps you should try some spelling variations:
van khanh » van thanh, van hanh, van anh
van nhanh » van thanh, van hanh, van nhan
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
co viet » so viet, o viet, hoc viet
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
thi co » thi mo, thi cu, thi bo
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang x hoi. hieu van cam tuc ((van nhanh) OR (van khanh)) thi co viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang x hoi. hieu van cam tuc ((van nhanh) OR (van khanh)) thi co viet*".