Perhaps you should try some spelling variations:
thai cau » thai cao, toan cau, thai van
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
qua cao » qua cac, qua ca, qua cai
cao tuc » dao tuc, cao duc, cao suc
va tinh » may tinh
y nang » ky nang, v nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) OR (ly nang)) ma hoi. hieu qua cao tuc ((va tinh) or (gia thanh)) thai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) ma hoi. hieu qua cao tuc ((va tinh) OR (gia thanh)) thai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) OR (ly nang)) ma hoi. hieu qua cao tuc ((va tinh) or (gia thanh)) thai cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) OR (ly nang)) ma hoi. hieu qua cao tuc ((va tinh) or (gia thanh)) thai cau tren*.