Perhaps you should try some spelling variations:
vien cac » vien bach, vien dai, vien da
dinh di » dinh du, dinh vi, danh di
va dinh » van dinh, va kinh, va tinh
nang ma » tang ma, sang ma, nang cao
sach ly » sach lo, sach ty, sach hay
di cua » dai cua, doi cua, de cua
xuc va » duc va, tuc va, luc va
ve cac » va cac
ma hoi » mai hoi, xa hoi, ma hoa
cua tu » cua tuc, cua su, cua cu

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 ly) or (sach y)) nang ma hoi. hieu ((ve cac) OR (vien cac)) xuc va dinh di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach y)) nang ma hoi. hieu ((ve cac) OR (vien cac)) xuc va dinh di cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) or (sach y)) nang ma hoi. hieu ((ve cac) OR (vien cac)) xuc va dinh di cua tu*".