Perhaps you should try some spelling variations:
cham cuu » cap cuu, chat cua
dieu tra » dieu tri, kiem tra, dieu cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang co » nang cao, nang doc, nang noi
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va hang » van hang, va nang, va lang
van han » van hanh, van phan, van nhan
tra tre » tran tren, tran tri, tran tro
co hoi » co hoc, co loi

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 ky nang co hoi. hieu ve cham cuu ((va hang) or (van han)) dieu tra tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang co hoi. hieu ve cham cuu ((va hang) OR (van han)) dieu tra tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang co hoi. hieu ve cham cuu ((va hang) or (van han)) dieu tra tre*.