Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
cham cuu » chat cua
ve thanh » le thanh, de thanh, den thanh
su sach » so sach, vu sach
cua tre » cua te, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
cuu tre » cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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 nang xa hoi. hieu ve ((cham cuu) or (cap cuu)) ve thanh dai ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. hieu ve ((cham cuu) OR (cap cuu)) ve thanh dai ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. hieu ve ((cham cuu) or (cap cuu)) ve thanh dai ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. hieu ve ((cham cuu) or (cap cuu)) ve thanh dai ((cua tre) OR (cuu tre))*.