Perhaps you should try some spelling variations:
van lang » van nang, va lang, van hang
cham luc » cham soc, nhan luc, cham cuu
su sach » so sach
tu cham » toc cham, thi cham
va danh » va dinh, va dan, va hanh
hieu tu » chieu tu, hieu tuc, hien tu
lang xa » lang ha, dang xay, lang van
vu sach » vu bach, vu khach
vai cua » dai cua, hai cua, lai cua
luc va » duc va, tuc va, loc va
vi cua » di cua

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) or (vu sach)) van lang xa hoi. hieu tu cham luc va danh ((vi cua) OR (vai cua)) vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) van lang xa hoi. hieu tu cham luc va danh ((vi cua) OR (vai cua)) vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) van lang xa hoi. hieu tu cham luc va danh ((vi cua) OR (vai cua)) vat".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) van lang xa hoi. hieu tu cham luc va danh ((vi cua) OR (vai cua)) vat*.