Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
hanh doi » thanh doi, hanh noi, hang doi
te sach » toc sach
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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 cam) or (ve cac)) duc va hanh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi nang xa hoi. hieu ((ve cam) OR (ve cac)) duc va hanh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach thi nang xa hoi. hieu ((ve cam) or (ve cac)) duc va hanh doi cua tre*.