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