Perhaps you should try some spelling variations:
sach hay » sach han, sach ha, sach nay
chat xuc » chat huu, cam xuc, chao xu
sach thu » sach thue, sach thieu, sach tham
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, cac cuoc
hang xa » hoang xa, hang va, hang ca
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 hay) or (sach thu)) hang xa hoi. hieu van ((cac xuc) OR (chat xuc)) va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach hay) OR (sach thu)) hang xa hoi. hieu van ((cac xuc) OR (chat xuc)) va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach hay) or (sach thu)) hang xa hoi. hieu van ((cac xuc) OR (chat xuc)) va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach hay) or (sach thu)) hang xa hoi. hieu van ((cac xuc) OR (chat xuc)) va hanh vi cua te*.