Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
danh hai » dang hai, lanh hai, manh hai
sach ky » sac ky, sach y, sach ty
hai cau » hai chau, hai chu, hai hau
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
nang ma » tang ma, sang ma, nang cao
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien 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 sach ky nang ma hoi. hieu ((ve cham) or (ve cac)) ((xuc va) or (tuc va)) danh hai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu ((ve cham) OR (ve cac)) ((xuc va) OR (tuc va)) danh hai cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu ((ve cham) or (ve cac)) ((xuc va) or (tuc va)) danh hai cau tren*.