Perhaps you should try some spelling variations:
tieu viet » sieu viet, tien viet, tieng viet
lieu viet » sieu viet, lieu vien, dien viet
sach nuoc » sach duoc, cac nuoc, bach tuoc
hanh doi » thanh doi, hanh noi, hang doi
cau tren » cu tren, dau tren, ca tren
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, ban hanh
doi cau » doi dau, di cau, doi ca
su cac » tu cac, su cao, su can

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky nang xa hoi. ((lieu viet) or (tieu viet)) sach nuoc va hanh doi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky nang xa hoi. ((lieu viet) OR (tieu viet)) sach nuoc va hanh doi cau tren.
• Adding a wildcard symbol may retrieve word variants: su cac ky nang xa hoi. ((lieu viet) or (tieu viet)) sach nuoc va hanh doi cau tren*.