Perhaps you should try some spelling variations:
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
doi cua » dai cua, hoi cua, dong cua
ve cac » va cac, vien cac
di cua » dai cua, de cua, do cua

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 ky nang xa hoi. hieu ve cac xuc ((van hanh) or (ban hanh)) ((di cua) OR (doi cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ve cac xuc ((van hanh) OR (ban hanh)) ((di cua) OR (doi cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ve cac xuc ((van hanh) or (ban hanh)) ((di cua) OR (doi cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ve cac xuc ((van hanh) or (ban hanh)) ((di cua) OR (doi cua)) tre*.