Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
lap cau » luat cau, phap cau
dan lap » phan lap, dan luan
truc va » thuc va, thuc vat, trung va
ve chat » va chat, van chat
su sach » vu sach
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
ve cham » va cham, vu cham, ve chim
va dan » ca dan, va dao, va dau
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (so sach)) ty nang x hoi. hieu ((ve cham) or (ve chat)) truc va dan lap cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang x hoi. hieu ((ve cham) OR (ve chat)) truc va dan lap cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang x hoi. hieu ((ve cham) or (ve chat)) truc va dan lap cau tren".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ty nang x hoi. hieu ((ve cham) or (ve chat)) truc va dan lap cau tren*.