Perhaps you should try some spelling variations:
van cham » van tham, va cham, van pham
van chat » cao chat
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
han tri » han tai, van tri, thanh tri
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
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: ((tu sach) OR (su sach)) ky nang xa hoi. hieu ((van cham) or (van chat)) xuc va han tri va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. hieu ((van cham) OR (van chat)) xuc va han tri va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang xa hoi. hieu ((van cham) or (van chat)) xuc va han tri va thiet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang xa hoi. hieu ((van cham) or (van chat)) xuc va han tri va thiet*.