Perhaps you should try some spelling variations:
van cham » van chat, van tham, van pham
nhan tri » nhan tai, nhanh thi, thanh tri
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
xa nhan » ca nhan, va nhan, xa phan
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 ty nang xa hoi. hieu ((van cham) or (va cham)) tuc xa nhan tri va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ((van cham) OR (va cham)) tuc xa nhan tri va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ((van cham) or (va cham)) tuc xa nhan tri va thiet*.