Perhaps you should try some spelling variations:
lanh hai » manh hai, thanh hai, lang chai
su sach » so sach, vu sach
danh vi » hanh vi, dinh vi, danh di
truc va » thuc va, thuc vat, trung va
ve cham » va cham, ve chat, vu cham
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
ky sang » ky nang, ky dang, ky tang
tuc va » thuc va, tuc xa, duc va
vi cua » vai cua, di cua
cua te » cua tu

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 ky sang ((lanh hai) or (lap tai)). hieu ve cham ((tuc va) OR (truc va)) danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang ((lanh hai) OR (lap tai)). hieu ve cham ((tuc va) OR (truc va)) danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky sang ((lanh hai) or (lap tai)). hieu ve cham ((tuc va) OR (truc va)) danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky sang ((lanh hai) or (lap tai)). hieu ve cham ((tuc va) OR (truc va)) danh vi cua te*.