Perhaps you should try some spelling variations:
va doanh » van doanh, vay doanh, va danh
cham tuc » nham thuc, pham thuc, tham thuc
tu sach » thu sach, su sach, te sach
cuc tre » duc tre, cua tre, cuc thue
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
sach 2 » sach y
tuc va » thuc va, truc va, tuc xa

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 2 ((nang xa) or (nang ma)) hoi. hieu ve cham tuc va doanh tai ((cuc tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach 2 ((nang xa) OR (nang ma)) hoi. hieu ve cham tuc va doanh tai ((cuc tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach 2 ((nang xa) or (nang ma)) hoi. hieu ve cham tuc va doanh tai ((cuc tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach 2 ((nang xa) or (nang ma)) hoi. hieu ve cham tuc va doanh tai ((cuc tre) OR (cuu tre))*.