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