Perhaps you should try some spelling variations:
kham luc » khai luoc, kham cuoc, nhan luc
danh tai » doanh tai, dinh tai, hanh tai
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cua triet, dua tren
va danh » va dinh, va dan, va hanh
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
hieu vu » hieu va, hieu su, dieu vu
xang xa » lang xa, mang xa, ang xa
cuu tre » cau tren, cau treo
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: su sach ty xang xa hoi. ((hieu vu) OR (hieu ve)) kham luc va danh tai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. ((hieu vu) OR (hieu ve)) kham luc va danh tai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. ((hieu vu) OR (hieu ve)) kham luc va danh tai ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. ((hieu vu) OR (hieu ve)) kham luc va danh tai ((cua tre) or (cuu tre))*.