Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
dua tren » dung tren
ban hang » ngan hang
xuc ban » duc ban, cuc ban, quoc ban
nang ha » nang hai, nang han, nang hoa
hang vi » hang va, hanh vi, hang di
nam xuc » cam xuc, nam xua, nam thuc
te sac » te sach, te cac, te san
ha hoi » hoa hoi, ha noi, xa hoi
tu san » thu san, tu ban, tu can
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 sac) or (tu san)) ky nang ha hoi. hieu van nam xuc ban hang vi ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (tu san)) ky nang ha hoi. hieu van nam xuc ban hang vi ((dua tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (tu san)) ky nang ha hoi. hieu van nam xuc ban hang vi ((dua tren) or (cua te))*.