Perhaps you should try some spelling variations:
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh dai » thanh hai, thanh tai, thanh dat
cua viet » hoa viet, cua vat, cua dieu
suc danh » suc manh, suc canh, sach danh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ca viet » va viet, co viet, hoa viet
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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