Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
thanh tai » thanh hai, thanh toan, doanh tai
cua quoc » cua nuoc, cua thuoc
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
cua duc » cua tuc, cua nuoc
cuc te » cua te, cuc thue, cuc tieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach y)) nang xa hoi. hieu viec ((cua duc) OR (cua quoc)) va thanh tai cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang xa hoi. hieu viec ((cua duc) OR (cua quoc)) va thanh tai cuc te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) or (sach y)) nang xa hoi. hieu viec ((cua duc) OR (cua quoc)) va thanh tai cuc te*".