Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
van lanh » van anh, van hanh, van manh
te sach » toc sach
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, me hoi
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua 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 thu nang ((ma hoi) OR (ma hoa)). hieu ve cac xuc van lanh dao ((cua tu) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thu nang ((ma hoi) OR (ma hoa)). hieu ve cac xuc van lanh dao ((cua tu) OR (cua cu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu nang ((ma hoi) OR (ma hoa)). hieu ve cac xuc van lanh dao ((cua tu) or (cua cu))".
• Adding a wildcard symbol may retrieve word variants: te sach thu nang ((ma hoi) OR (ma hoa)). hieu ve cac xuc van lanh dao ((cua tu) or (cua cu))*.