Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
van thanh » ban thanh, van tuan
cua viet » ca viet, hoa viet, cua dieu
nang tai » hang tai, tang tai, sang tai
tai khoi » tai khoa, mai khoi, tao khoi
thanh di » thanh doi, thanh de, thanh do
su sach » so sach, vu sach
cac xuc » cac nuoc, chat xuc, cac cuoc
sach ty » sach y, sach tu, sach thu
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 tai khoi. hieu hien ((cac xuc) OR (cam xuc)) van thanh di ((cua viet) OR (cua vat))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang tai khoi. hieu hien ((cac xuc) OR (cam xuc)) van thanh di ((cua viet) OR (cua vat))".
• Adding a wildcard symbol may retrieve word variants: su sach ty nang tai khoi. hieu hien ((cac xuc) OR (cam xuc)) van thanh di ((cua viet) OR (cua vat))*.