Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue nang » thien nang, thuat nang, thi nang
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc van » luc van, vuc van, xuc ban
duc van » duc va, duc tan, duc manh
ve cac » va cac, vien cac
cua cu » cua chu, cua cau, cua co
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thue nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi ((cua cu) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thue nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi ((cua cu) OR (cua su)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thue nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi ((cua cu) or (cua su))".
• Adding a wildcard symbol may retrieve word variants: te sach thue nang xa hoi. hieu ve cac ((xuc van) OR (duc van)) hanh vi ((cua cu) or (cua su))*.