Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach kem
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
sach ty » sach y, sach tu, sach thu
cam tu » cam thu, nam tu, dam tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) OR (sach ty)) nang xa hoi. hieu ve ((cam tu) or (am thuc)) va hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach ty)) nang xa hoi. hieu ve ((cam tu) OR (am thuc)) va hanh vai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ky) OR (sach ty)) nang xa hoi. hieu ve ((cam tu) or (am thuc)) va hanh vai cua viet".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) OR (sach ty)) nang xa hoi. hieu ve ((cam tu) or (am thuc)) va hanh vai cua viet*.