Perhaps you should try some spelling variations:
dung cong » dung trong
dua tren » dung tren
cau tren » cu tren, dau tren, ca tren
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, nam thuc
va dung » van dung, va duong, vat dung
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau treo
su sach » so sach, vu sach
ve cam » ve cham, ve cac, va cam
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 ky nang xa hoi. hieu ve cam tuc va dung cong ((dua tren) 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 ve cam tuc va dung cong ((dua tren) 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 ve cam tuc va dung cong ((dua tren) or (((cuu tre) OR (cau tren))))*".