Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
van hanh » ban hanh, van ban, van minh
te sach » toc sach
van anh » tuan anh, van minh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua
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 thi nang xa hoi. hieu ve cac xuc ((((van hanh) OR (van thanh))) or (van anh)) di cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi nang xa hoi. hieu ve cac xuc ((((van hanh) OR (van thanh))) OR (van anh)) di cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi nang xa hoi. hieu ve cac xuc ((((van hanh) OR (van thanh))) or (van anh)) di cua cu".
• Adding a wildcard symbol may retrieve word variants: te sach thi nang xa hoi. hieu ve cac xuc ((((van hanh) OR (van thanh))) or (van anh)) di cua cu*.