Perhaps you should try some spelling variations:
cham cuu » cap cuu, chat cua
cham luc » cham soc, nhan luc, chat lua
tu sach » thu sach, su sach, te sach
danh de » hanh de, dan de, dang de
va danh » va dinh, va dan, va hanh
sach va » sach xa, sach ha, sach dao
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach va ((nang xa) or (nang cao)) hoi. hieu va ((cham luc) or (cham cuu)) va danh de cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach va ((nang xa) OR (nang cao)) hoi. hieu va ((cham luc) OR (cham cuu)) va danh de cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach va ((nang xa) or (nang cao)) hoi. hieu va ((cham luc) or (cham cuu)) va danh de cua vat*.