Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
nam xuc » cam xuc, nam thuc, nam duoc
nam xua » nam cua, nam mua, nam qua
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
cua tre » cua te, cuu tre, cua triet
bai ky » sai ky, bac ky, dai ky
ban ky » van ky, dan ky
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te ((bai ky) or (ban ky)) nang xa hoi. hieu van ((nam xuc) OR (nam xua)) va tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((bai ky) OR (ban ky)) nang xa hoi. hieu van ((nam xuc) OR (nam xua)) va tinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((bai ky) or (ban ky)) nang xa hoi. hieu van ((nam xuc) OR (nam xua)) va tinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((bai ky) or (ban ky)) nang xa hoi. hieu van ((nam xuc) OR (nam xua)) va tinh vi cua tre*.