Perhaps you should try some spelling variations:
chua thiet » chuan thiet, cua thiet, thua thiet
duc thuan » duc tan, duc thang, duc phan
hoc sach » hoc sinh, hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
nang xa » nang x, lang xa, nang ma
y nang » ky nang, ly nang, v nang
anh vu » hanh vu, anh tu, anh ve
anh va » hanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach y nang xa hoi. hieu van pham duc thuan ((anh vu) OR (anh va)) chua thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach y nang xa hoi. hieu van pham duc thuan ((anh vu) OR (anh va)) chua thiet".
• Adding a wildcard symbol may retrieve word variants: hoc sach y nang xa hoi. hieu van pham duc thuan ((anh vu) OR (anh va)) chua thiet*.