Perhaps you should try some spelling variations:
dung cong » dung trong
hieu van » hieu va, thien van, lieu va
van dung » van dong, xay dung, tin dung
cau tren » cu tren, dau tren, ca tren
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
xuc van » duc van, luc van, vuc van
cua tre » cua te, cua triet, dua tren
cuu tre » cau treo

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 ky nang xa hoi. hieu van cam xuc van dung cong ((cua tre) or (((cuu tre) OR (cau tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu van cam xuc van dung cong ((cua tre) OR (((cuu tre) OR (cau tren))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. hieu van cam xuc van dung cong ((cua tre) or (((cuu tre) OR (cau tren))))*".