Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hanh doi » thanh doi, hanh noi, hang doi
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
duc van » duc va, duc manh, duc phan
doi cua » dai cua, hoi cua, dong 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: thuat sach ly nang xa hoi. ((hieu ve) or (hieu va)) cam ((duc van) or (duc tan)) hanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ly nang xa hoi. ((hieu ve) OR (hieu va)) cam ((duc van) OR (duc tan)) hanh doi cua te.
• Adding a wildcard symbol may retrieve word variants: thuat sach ly nang xa hoi. ((hieu ve) or (hieu va)) cam ((duc van) or (duc tan)) hanh doi cua te*.