Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
hieu van » hieu va, thien van, lieu va
dua tren » dung tren
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
ky dang » ky nang, ky danh
cam tuc » cam xuc, cam tu, dam thuc
dang ha » dong ha, dung ha, lang ha
cua te » cua tu
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky dang ha hoi. hieu van ((cam tuc) OR (nam thuc)) va thanh vi ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky dang ha hoi. hieu van ((cam tuc) OR (nam thuc)) va thanh vi ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky dang ha hoi. hieu van ((cam tuc) OR (nam thuc)) va thanh vi ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu cac ky dang ha hoi. hieu van ((cam tuc) OR (nam thuc)) va thanh vi ((dua tren) or (cua te))*.