Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, xuc ban
doi cua » hoi cua, dong cua
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y nang xa hoi. hieu ve cac xuc van hanh ((de cua) or (((doi cua) or (dai cua)))) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach y nang xa hoi. hieu ve cac xuc van hanh ((de cua) OR (((doi cua) OR (dai cua)))) tre.
• Adding a wildcard symbol may retrieve word variants: toc sach y nang xa hoi. hieu ve cac xuc van hanh ((de cua) or (((doi cua) or (dai cua)))) tre*.