Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach hay » sach han, sach ha, sach nay
vien cac » vien bach, vien dai, vien da
vai cua » dai cua, hai cua, lai cua
sach ty » sach y, sach tu, sach thu
hang xa » hoang xa, hang va, hang ca
va hanh » van hanh, va thanh, va danh
tuc va » thuc va, truc va, tuc xa
ve cac » va cac
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: thuat ((sach hay) or (sach ty)) hang xa hoi. hieu ((ve cac) OR (vien cac)) tuc va hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach hay) OR (sach ty)) hang xa hoi. hieu ((ve cac) OR (vien cac)) tuc va hanh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach hay) or (sach ty)) hang xa hoi. hieu ((ve cac) OR (vien cac)) tuc va hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach hay) or (sach ty)) hang xa hoi. hieu ((ve cac) OR (vien cac)) tuc va hanh vai cua tu*.