Perhaps you should try some spelling variations:
thien cau » hien cau, khien cau, thien cac
hien cam » hien cac, hien cau, hien giam
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
cua tu » cua tuc, cua su, cua cu

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 ky ((nang xa) OR (nang ma)) hoi. hieu ((hien cam) or (thien cau)) ly va hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang xa) OR (nang ma)) hoi. hieu ((hien cam) OR (thien cau)) ly va hanh vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((nang xa) OR (nang ma)) hoi. hieu ((hien cam) or (thien cau)) ly va hanh vai cua tu".
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang xa) OR (nang ma)) hoi. hieu ((hien cam) or (thien cau)) ly va hanh vai cua tu*.