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