Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
lang van » dang van, tang van, hoang van
cham hoi » cham voi, pham hoai, chai thoi
tinh vi » trinh vi, tinh voi, tinh va
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
cuu tre » cua tre, cau treo
va tinh » may tinh
tu sai » tu bai, tu san, tu cai
sai ky » sac ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky lang van hoi. hieu qua ((cham hoi) or (cham h'roi)) va tinh vi ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky lang van hoi. hieu qua ((cham hoi) OR (cham h'roi)) va tinh vi ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky lang van hoi. hieu qua ((cham hoi) or (cham h'roi)) va tinh vi ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: tu sai ky lang van hoi. hieu qua ((cham hoi) or (cham h'roi)) va tinh vi ((cuu tre) OR (cau tren))*.