Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, van bac
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
cua tec » cua tuc, cua toc, cua viec
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang xa hoi. hieu van cac nuoc va tinh va ((cua te) or (cua tec))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu van cac nuoc va tinh va ((cua te) OR (cua tec)).
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu van cac nuoc va tinh va ((cua te) or (cua tec))*.