Perhaps you should try some spelling variations:
hanh dam » thanh dam, hanh lam, hanh nam
va cham » va chat, va tham
nang xa » lang xa, nang ma, mang xa
va hanh » van hanh, va thanh, va danh
su sac » su sach, su cac, su xac
xuc va » duc va, tuc va, luc va
va cam » va cac, va cao, va cai
sac ky » cac ky, sai ky
dam va » dam van, nam va, dam ha
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 sac ky ((nang xa) OR (nang x)) hoi. hieu ((va cam) or (va cham)) xuc va hanh dam va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang xa) OR (nang x)) hoi. hieu ((va cam) OR (va cham)) xuc va hanh dam va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((nang xa) OR (nang x)) hoi. hieu ((va cam) or (va cham)) xuc va hanh dam va thiet".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) OR (nang x)) hoi. hieu ((va cam) or (va cham)) xuc va hanh dam va thiet*.