Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
tri nang » thi nang, tra nang, tri bang
dien cua » dieu cua, dien cu, tien cua
dien cuc » dien tu, dieu cua, vien cac
hoc anh » hoc nganh, hoc nhanh, ngoc anh
nang xa » nang x, lang xa, nang ma
qua cam » qua cham, qua cac, qua ca
va nhan » van nhan, ca nhan, va phan
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) or (hoc anh)) tri nang xa hoi. hieu qua cam xuc va nhan ((dien cua) OR (dien cuc)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (hoc anh)) tri nang xa hoi. hieu qua cam xuc va nhan ((dien cua) OR (dien cuc)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc sach) or (hoc anh)) tri nang xa hoi. hieu qua cam xuc va nhan ((dien cua) OR (dien cuc)) te*".