Perhaps you should try some spelling variations:
vinh cuu » dinh cuu, sinh cua, dinh cu
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cac, va cao
vi luu » vi lua

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) or (sach y)) nang xa hoi. hieu va cam duc va hanh ((vi luu) or (vinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) nang xa hoi. hieu va cam duc va hanh ((vi luu) OR (vinh cuu)) tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach y)) nang xa hoi. hieu va cam duc va hanh ((vi luu) or (vinh cuu)) tre*.