Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu viec » nhieu viec, hieu ve, sieu viet
van thanh » ban thanh
van tuan » van quan, van ban, anh tuan
vien cua » viec cua, dien cua, tien cua
cua viet » ca viet, hoa viet, cua vat
y nang » ky nang, ly nang, v nang
cac lo » cac lop, cac bo, cac ho
cac co » cac cong

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach y nang x ho. hieu viec ((cac lo) or (cac co)) ((van thanh) OR (van tuan)) vien cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang x ho. hieu viec ((cac lo) OR (cac co)) ((van thanh) OR (van tuan)) vien cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang x ho. hieu viec ((cac lo) or (cac co)) ((van thanh) OR (van tuan)) vien cua viet".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang x ho. hieu viec ((cac lo) or (cac co)) ((van thanh) OR (van tuan)) vien cua viet*.