Perhaps you should try some spelling variations:
thieu vien » thieu nien, thieu bien, thu vien
vien cac » vien bach, vien dai, vien da
cua viet » hoa viet, cua vat, cua dieu
van hanh » van thanh, ban hanh, van anh
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
sach ky » sach y, sach ty, sach kem
nang ma » tang ma, sang ma, nang cao
ca viet » va viet, co viet, hoa viet
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sac ky)) nang ma hoi. thieu vien cac xuc van hanh va ((cua viet) OR (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sac ky)) nang ma hoi. thieu vien cac xuc van hanh va ((cua viet) OR (ca viet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sac ky)) nang ma hoi. thieu vien cac xuc van hanh va ((cua viet) OR (ca viet))*".