Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dang xay » dang van, van xay
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
tu cach » tu cac
mang xa » lang xa, mang may, mang cua
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
va cua » va chua, via cua, ca cua
cua te » cua tu

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

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