Perhaps you should try some spelling variations:
sach dao » lanh dao
dao nang » cao nang, da nang, dai nang
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
va hanh » van hanh, va thanh, va danh
cau tuc » cau truc, cau tu, cau luc
thi lan » thi hanh, thi nang, thi lien
thi van » thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
cu tren » tu tren, dua tren
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach dao nang xa hoi. ((thi van) OR (thi lan)) cau tuc va hanh vi ((cua tre) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach dao nang xa hoi. ((thi van) OR (thi lan)) cau tuc va hanh vi ((cua tre) OR (cu tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach dao nang xa hoi. ((thi van) OR (thi lan)) cau tuc va hanh vi ((cua tre) or (cu tren))".
• Adding a wildcard symbol may retrieve word variants: su sach dao nang xa hoi. ((thi van) OR (thi lan)) cau tuc va hanh vi ((cua tre) or (cu tren))*.