Perhaps you should try some spelling variations:
luc ngan » luc nganh, luc nhan, luat ngan
sach ty » sach y, sach tu, sach thu
ve cham » va cham, ve chat, vu cham
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » ve cac, va cam, ve cai
va dao » ca dao
hang » dang, bang, hanh

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 cam) OR (ve cham)) luc ngan hang ((va dau) or (va dao)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ((ve cam) OR (ve cham)) luc ngan hang ((va dau) OR (va dao)) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ((ve cam) OR (ve cham)) luc ngan hang ((va dau) or (va dao)) tren".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ((ve cam) OR (ve cham)) luc ngan hang ((va dau) or (va dao)) tren*.