Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
dau tren » dau tien, dat tren, dau tieng
chat xuc » chat huu, cam xuc, chao xu
van hanh » ban hanh, van anh, van ban
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, me hoi
vi dau » vi dai, va dau, bi dau
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang ((ma hoi) or (ma hoa)). hieu ve chat xuc ((van hanh) or (van thanh)) vi dau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ((ma hoi) OR (ma hoa)). hieu ve chat xuc ((van hanh) OR (van thanh)) vi dau tren.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ((ma hoi) or (ma hoa)). hieu ve chat xuc ((van hanh) or (van thanh)) vi dau tren*.