Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
chuc van » chuc va, thuc van, chuc can
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
chu van » cuu van, chu han
ve cau » ke cau, va cau, ve cac
di cua » doi cua, de cua, do cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ky nang x hoi. hieu ve cau ((chuc van) OR (chu van)) hanh ((di cua) or (dai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ky nang x hoi. hieu ve cau ((chuc van) OR (chu van)) hanh ((di cua) OR (dai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ky nang x hoi. hieu ve cau ((chuc van) OR (chu van)) hanh ((di cua) or (dai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: nuoc sach ky nang x hoi. hieu ve cau ((chuc van) OR (chu van)) hanh ((di cua) or (dai cua)) tre*.