Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
hieu quan » hieu qua, lieu quan, thien quan
dao danh » dao doanh, do danh, dao dan
danh dai » danh dau, danh di, danh sai
am chuc » am thuc, nam thuc, dam thuc
dai cuu » dai cua, dai huu
cuu tre » cua tre, cau tren, cau treo
te cac » tu cac, te cao, de cac
ve cac » va cac, vien cac

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (ve cac)) ky nang x ho. hieu quan ((am chuc) OR (pham chuc)) dao danh dai cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cac) OR (ve cac)) ky nang x ho. hieu quan ((am chuc) or (pham chuc)) dao danh dai cuu tre~".
• Adding a wildcard symbol may retrieve word variants: ((te cac) OR (ve cac)) ky nang x ho. hieu quan ((am chuc) or (pham chuc)) dao danh dai cuu tre*.