Perhaps you should try some spelling variations:
nhan tai » hang tai, van tai, toan tai
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
han tai » hang tai, van tai, toan tai
va cham » va chat, va tham
ve cham » ve chat, vu cham, ve chim
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
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 cham)) xuc va ((han tai) OR (nhan 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 cham)) xuc va ((han tai) OR (nhan 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 cham)) xuc va ((han tai) OR (nhan tai)) va thiet".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ((ve cham) or (va cham)) xuc va ((han tai) OR (nhan tai)) va thiet*.