Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cua viet » ca viet, hoa viet, cua vat
chat duc » chat xuc, chat doc, chet duoc
hanh lam » thanh lap, hanh kem, hanh va
hanh lai » hanh tai, thanh lap, thanh loi
van chat » cao chat
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
tu sach » thu sach, su sach, te sach

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 ky nang xa hoi. hieu van chat duc va ((((hanh lai) OR (hanh lam))) or (thanh tai)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu van chat duc va ((((hanh lai) OR (hanh lam))) OR (thanh tai)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu van chat duc va ((((hanh lai) OR (hanh lam))) or (thanh tai)) cua viet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu van chat duc va ((((hanh lai) OR (hanh lam))) or (thanh tai)) cua viet*.