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