Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
van thanh » ban thanh
cua viet » ca viet, hoa viet, cua vat
nang tai » hang tai, tang tai, sang tai
van tuan » van quan, van ban, anh tuan
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
cac xuc » cac nuoc, chat xuc, cac cuoc
tai hoi » tai khoi, dai hoi, tai hai
ty nang » ky nang, ty xang, ty hang
vi cua » vai cua, di cua

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