Perhaps you should try some spelling variations:
dang xay » dang van, van xay
hieu van » hieu va, thien van, lieu va
nam xuc » cam xuc, nam thuc, nam duoc
nam xua » nam cua, nam mua, nam qua
danh va » doanh va, hanh va, anh va
xay hoi » xa hoi, tay hoi, cay phoi
va danh » va dinh, va dan, va hanh
va cua » va chua, via cua, ca cua
sai ky » sac ky
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 ((sai ky) or (cac ky)) dang xay hoi. hieu van ((nam xuc) OR (nam xua)) va danh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sai ky) OR (cac ky)) dang xay hoi. hieu van ((nam xuc) OR (nam xua)) va danh va cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sai ky) or (cac ky)) dang xay hoi. hieu van ((nam xuc) OR (nam xua)) va danh va cua te*".