Perhaps you should try some spelling variations:
tiep tieng » tap tieng, tien tien, tiep trong
hieu viec » nhieu viec, hieu ve, sieu viet
sach duoc » sach nuoc, sach dao, sach dung
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
duoc va » nuoc va, duc va, duoc ma
va hanh » van hanh, va thanh, va danh
hanh du » hanh dua, hanh tu, hanh de
cuu tre » cua tre, cau tren, cau treo
du cuu » tu cuu

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 ly nang xa hoi. ((tiep tieng) or (hieu viec)) sach duoc va hanh du cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang xa hoi. ((tiep tieng) OR (hieu viec)) sach duoc va hanh du cuu tre.
• Adding a wildcard symbol may retrieve word variants: su sach ly nang xa hoi. ((tiep tieng) or (hieu viec)) sach duoc va hanh du cuu tre*.