Perhaps you should try some spelling variations:
tham nghiep » thuat nghiep, lam nghiep, tam nghien
nghien van » nghiem van, nghiep van, nguyen van
sach tham » sach nha
nghiep va » nghiep vu
va hoach » ke hoach, va hoc, va cach
te sach » toc sach
tu tac » tu trac, tu tai, tu cac
tac va » tac da, tac xa, tuc va
hoa du » hoa dau, hoa lu, hoa su
hoa xu » hoa xua, hoa xuc, hoa xa
tich » tinh, dich

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu tac va nghien van ((hoa du) or (hoa xu)) lich ) or ( te sach tham nghiep va hoach su tich ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu tac va nghien van ((hoa du) OR (hoa xu)) lich ) OR ( te sach tham nghiep va hoach su tich )).
• Adding a wildcard symbol may retrieve word variants: (( tu tac va nghien van ((hoa du) or (hoa xu)) lich ) or ( te sach tham nghiep va hoach su tich ))*.