Perhaps you should try some spelling variations:
thien van » thi van
dau tren » dau tien, dat tren, dau tieng
su sach » so sach, vu sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
van hau » van ha, van hai, van dau
hau tuc » cau truc, hieu tuc, thai tuc
xa hanh » xa thanh, xa khanh, va hanh
cua tre » cua te, cuu tre, cua triet
cu tren » tu tren, dua tren

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 ly nang xa hoi. thien van hau tuc xa hanh vi ((cua tre) or (((cu tren) or (dau tren))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly nang xa hoi. thien van hau tuc xa hanh vi ((cua tre) OR (((cu tren) OR (dau tren)))).
• Adding a wildcard symbol may retrieve word variants: su sach ly nang xa hoi. thien van hau tuc xa hanh vi ((cua tre) or (((cu tren) or (dau tren))))*.