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