Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
dang xay » dang van, van xay
va hanh » van hanh, va thanh, va danh
ve chat » va chat, van chat
ve cham » va cham, vu cham, ve chim
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, lang van
vi cua » vai cua, di 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: thuat sach ty ((dang xay) or (lang xa)) hoi. hieu ((ve cham) OR (ve chat)) duc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ty ((dang xay) OR (lang xa)) hoi. hieu ((ve cham) OR (ve chat)) duc va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ty ((dang xay) or (lang xa)) hoi. hieu ((ve cham) OR (ve chat)) duc va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ty ((dang xay) or (lang xa)) hoi. hieu ((ve cham) OR (ve chat)) duc va hanh vi cua te*.