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
vu sach » vu bach, vu khach
lang xa » lang ha, dang xay, lang van
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
luc va » duc va, tuc va, loc va
vi cua » vai 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 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 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 vat*.