Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
cua viet » ca viet, cua vat, cua dieu
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh

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