Perhaps you should try some spelling variations:
trinh ve » trinh he, trinh va, trinh vi
tu cach » tu cac
cuu ban » cua ban, cuu san, cuu nang
hieu va » lieu va, hieu qua
va cham » va chat, va tham
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
cau tre » cau tren, cau treo, cau tra
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) ky lang xa hoi. hieu va cham ((cuu ban) or (cuu van)) trinh ve cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) ky lang xa hoi. hieu va cham ((cuu ban) OR (cuu van)) trinh ve cau tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky lang xa hoi. hieu va cham ((cuu ban) or (cuu van)) trinh ve cau tre*.