Perhaps you should try some spelling variations:
van cham » van tham, va cham, van pham
van chat » cao chat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
van han » van hanh, van phan, van nhan
han tai » hang tai, nhan tai, van tai
tai va » thai va, mai va, tri va
thiet » thieu

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 xa hoi. hieu ((van cham) or (van chat)) duc van han tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((van cham) OR (van chat)) duc van han tai va thiet.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((van cham) or (van chat)) duc van han tai va thiet*.