Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, le thanh
va tinh » may tinh
sach tu » sach thu, sach ty, sach uu
nang xa » nang x, lang xa, nang ma
cach tu » cach thuc
van cam » van nam, van lam, van cau
vi cau » va cau, ve cau, di cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach tu) OR (cach tu)) nang xa hoi. hieu van cam xuc ((va thanh) or (va tinh)) vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach tu) OR (cach tu)) nang xa hoi. hieu van cam xuc ((va thanh) OR (va tinh)) vi cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach tu) OR (cach tu)) nang xa hoi. hieu van cam xuc ((va thanh) or (va tinh)) vi cau tren".
• Adding a wildcard symbol may retrieve word variants: vu ((sach tu) OR (cach tu)) nang xa hoi. hieu van cam xuc ((va thanh) or (va tinh)) vi cau tren*.