Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
dam cua » day cua, nam cua, dan cua
cac luc » cau luc, coc luc, cac nuoc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
so sach » so sanh, bo sach, co sach
ve cac » va cac, vien cac
luc va » duc va, tuc va, loc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (so sach)) ly nang xa hoi. hieu ve cac luc va thanh ((dam cua) OR (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (so sach)) ly nang xa hoi. hieu ve cac luc va thanh ((dam cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (so sach)) ly nang xa hoi. hieu ve cac luc va thanh ((dam cua) OR (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (so sach)) ly nang xa hoi. hieu ve cac luc va thanh ((dam cua) OR (dai cua)) tre*.